Seagate Cheetah ST3450757FC User Manual

Product Manual  
Cheetah 15K.7 FC  
Standard models  
ST3600057FC  
ST3450857FC  
ST3300657FC  
Self-Encrypting Drive models  
ST3600957FC  
ST3450757FC  
ST3300557FC  
SED FIPS 140-2 models  
ST3600857FC  
ST3450657FC  
ST3300457FC  
100516225  
Rev. E  
December 2012  
CONTENTS  
6.2.1  
CHEETAH 15K.7 FC PRODUCT MANUAL, REV. E  
I
CONTENTS  
11.1.6  
CHEETAH 15K.7 FC PRODUCT MANUAL, REV. E  
II  
CONTENTS  
11.6.4  
CHEETAH 15K.7 FC PRODUCT MANUAL, REV. E  
III  
®
Seagate Technology Support Services  
Available services include:  
Presales & Technical support  
Global Support Services telephone numbers & business hours  
Authorized Service Centers  
For information regarding Warranty Support, visit http://www.seagate.com/support/warranty-and-returns/  
Cheetah 15K.7 FC Product Manual, Rev. E  
1
   
1.0 SCOPE  
This manual describes Seagate Technology® LLC, Cheetah® 15K.7 FC (Fibre Channel) disk drives.  
Cheetah 15K.7 FC drives support the Fibre Channel Arbitrated Loop and SCSI Fibre Channel Protocol specifications to the  
extent described in this manual. The Fibre Channel Interface Manual (part number 100293070) describes the general Fibre  
Channel Arbitrated Loop characteristics of this and other Seagate Fibre Channel drives. The Self-Encrypting Drive (SED)  
Users Guide, part number 100515636 describes the interface, general operation and security features available on SED  
drives.  
From this point on in this product manual, the reference to Cheetah 15K.7 FC models is referred to as “the drive” unless  
references to individuals models are necessary.  
Unless otherwise stated, the information in this manual applies to standard and Self-Encrypting Drive models.  
MODEL NUMBER  
ST3600057FC  
ST3450857FC  
ST3300657FC  
ST3600957FC  
ST3600857FC  
ST3450757FC  
ST3450657FC  
ST3300557FC  
ST3300457FC  
CAPACITY  
600 GB  
450 GB  
300 GB  
600 GB  
600 GB  
450 GB  
450 GB  
300 GB  
300 GB  
SELF-ENCRYPTING DRIVE (SED)  
FIPS 140-2 LEVEL 2 CERTIFIED  
No  
No  
No  
No  
No  
No  
Yes  
Yes  
Yes  
Yes  
Yes  
Yes  
No  
Yes  
No  
Yes  
No  
Yes  
Note. Previous generations of Seagate Self-Encrypting Drive models were called Full Disk Encryption (FDE) models  
before a differentiation between drive-based encryption and other forms of encryption was necessary.  
Note. The Self-Encrypting Drive models indicated on the cover of this product manual have provisions for “Security of  
group.org).  
CHEETAH 15K.7 FC PRODUCT MANUAL, REV. E  
2
     
2.0 APPLICABLE STANDARDS AND REFERENCE DOCUMENTATION  
The drive has been developed as a system peripheral to the highest standards of design and construction. The drive  
depends upon its host equipment to provide adequate power and environment in order to achieve optimum performance and  
compliance with applicable industry and governmental regulations. Special attention must be given in the areas of safety,  
power distribution, shielding, audible noise control, and temperature regulation. In particular, the drive must be securely  
mounted in order to guarantee the specified performance characteristics. Mounting by bottom holes must meet the  
2.1  
STANDARDS  
The Cheetah 15K.7 FC family complies with Seagate standards as noted in the appropriate sections of this manual and the  
Seagate Fibre Channel Interface Manual, part number 100293070.  
The drives are recognized in accordance with UL 60950-1 and CSA 60950-1 as tested by UL and EN60950-1 as tested by  
TUV.  
The security features of Cheetah 15K.7 FC SED models are based on the “TCG Storage Architecture Core Specification”  
and the “TCG Storage Workgroup Security Subsystem Classs: Enterprise_A” specification with additional vendor-unique  
features as noted in this product manual.  
2.1.1 Electromagnetic compatibility  
The drive, as delivered, is designed for system integration and installation into a suitable enclosure prior to use. As such the  
drive is supplied as a subassembly and is not subject to Subpart B of Part 15 of the FCC Rules and Regulations nor the  
Radio Interference Regulations of the Canadian Department of Communications.  
The design characteristics of the drive serve to minimize radiation when installed in an enclosure that provides reasonable  
shielding. As such, the drive is capable of meeting the Class B limits of the FCC Rules and Regulations of the Canadian  
Department of Communications when properly packaged. However, it is the user’s responsibility to assure that the drive  
meets the appropriate EMI requirements in their system. Shielded I/O cables may be required if the enclosure does not  
provide adequate shielding. If the I/O cables are external to the enclosure, shielded cables should be used, with the shields  
grounded to the enclosure and to the host controller.  
2.1.1.1 Electromagnetic susceptibility  
As a component assembly, the drive is not required to meet any susceptibility performance requirements. It is the  
responsibility of those integrating the drive within their systems to perform those tests required and design their system to  
ensure that equipment operating in the same system as the drive or external to the system does not adversely affect the  
performance of the drive. See Table 2, DC power requirements.  
CHEETAH 15K.7 FC PRODUCT MANUAL, REV. E  
3
                                   
2.1.2 Electromagnetic compliance  
Seagate uses an independent laboratory to confirm compliance with the directives/standards for CE Marking and C-Tick  
Marking. The drive was tested in a representative system for typical applications. The selected system represents the most  
popular characteristics for test platforms. The system configurations include:  
• Typical current use microprocessor  
• Keyboard  
• Monitor/display  
• Printer  
• Mouse  
Although the test system with this Seagate model complies with the directives/standards, we cannot guarantee that all  
systems will comply. The computer manufacturer or system integrator shall confirm EMC compliance and provide the  
appropriate marking for their product.  
Electromagnetic compliance for the European Union  
If this model has the CE Marking it complies with the European Union requirements of the Electromagnetic Compatibility  
Directive 89/336/EEC of 03 May 1989 as amended by Directive 92/31/EEC of 28 April 1992 and Directive 93/68/EEC of 22  
July 1993.  
Australian C-Tick  
If this model has the C-Tick Marking it complies with the Australia/New Zealand Standard AS/NZS3548 1995 and meets the  
Electromagnetic Compatibility (EMC) Framework requirements of Australia’s Spectrum Management Agency (SMA).  
Korean KCC  
If this model has the Korean Communications Commission (KCC) logo, it complies with paragraph 1 of Article 11 of the  
Electromagnetic Compatibility (EMC) Control Regulation and meets the Electromagnetic Compatibility Framework  
requirements of the Radio Research Laboratory (RRL) Ministry of Information and Communication Republic of Korea.  
Taiwanese BSMI  
If this model has two Chinese words meaning “EMC certification” followed by an eight digit identification number, as a  
Marking, it complies with Chinese National Standard (CNS) 13438 and meets the Electromagnetic Compatibility (EMC)  
Framework requirements of the Taiwanese Bureau of Standards, Metrology, and Inspection (BSMI).  
2.2  
EUROPEAN UNION RESTRICTION OF HAZARDOUS SUBSTANCES (ROHS)  
The European Union Restriction of Hazardous Substances (RoHS) Directive restricts the presence of chemical substances,  
including Lead (Pb), in electronic products effective July 2006.  
A number of parts and materials in Seagate products are procured from external suppliers. We rely on the representations of  
our suppliers regarding the presence of RoHS substances in these parts and materials. Our supplier contracts require  
compliance with our chemical substance restrictions, and our suppliers document their compliance with our requirements by  
providing material content declarations for all parts and materials for the disk drives documented in this publication. Current  
supplier declarations include disclosure of the inclusion of any RoHS-regulated substance in such parts or materials.  
Seagate also has internal systems in place to ensure ongoing compliance with the RoHS Directive and all laws and  
regulations which restrict chemical content in electronic products. These systems include standard operating procedures that  
ensure that restricted substances are not utilized in our manufacturing operations, laboratory analytical validation testing,  
and an internal auditing process to ensure that all standard operating procedures are complied with.  
CHEETAH 15K.7 FC PRODUCT MANUAL, REV. E  
4
   
2.3  
REFERENCE DOCUMENTS  
ANSI Fibre Channel Documents  
X3.230-1994  
X3.297.1997  
X3.303.1998  
X3.272-1996  
FC Physical and Signaling Interface (FC-PH)  
FC-PH-2 Fibre Channel Physical and Signaling Interface-2  
FC-PH-3 Fibre Channel Physical and Signaling Interface-3  
FC Arbitrated Loop (FC-AL)  
X3.269-1996  
Fibre Channel Protocol for SCSI (FCP)  
NCITS TR-19  
NCITS TR-20  
SFF-8045  
Private Loop SCSI Direct Attach (PLDA)  
Fabric Loop Attachment (FC-FLA)  
Specification for 40-pin SCA-2 Connector with Parallel Selection  
Specification for 40-pin SCA-2 Connector with Bidirectional  
Enclosure Services Interface  
SFF-8067  
ANSI Small Computer System Interface (SCSI) Documents  
X3.131-1994  
(SCSI-2)  
X3.270-1996  
NCITS 305-199X  
(SCSI-3) Architecture Model  
(SCSI-3) Enclosure Services  
Trusted Computing Group (TCG) Documents (apply to SED models only)  
TCG Storage Architechture Core Specification, Rev. 1.0  
TCG Storage Security Class Enterprise Specification, Rev. 1.0  
Self-Encrypting Drives Users Guide  
Seagate part number: 100515636  
Specification for Acoustic Test Requirement and Procedures  
Seagate part number: 30553-001  
Package Test Specification  
Package Test Specification  
Seagate P/N 30190-001 (under 100 lb.)  
Seagate P/N 30191-001 (over 100 lb.)  
In case of conflict between this document and any referenced document, this document takes precedence.  
CHEETAH 15K.7 FC PRODUCT MANUAL, REV. E  
5
                 
3.0 GENERAL DESCRIPTION  
Cheetah 15K.7 FC drives provide high performance, high capacity data storage for a variety of systems including  
engineering workstations, network servers, mainframes, and supercomputers. Cheetah 15K.7 FC drives support 4-Gbit  
Fibre Channel.  
Cheetah 15K.7 FC drives support the Fibre Channel Arbitrated Loop (FC-AL) and SCSI Fibre Channel Protocol as described  
in the ANSI specifications, this document, and the Fibre Channel Interface Manual which describes the general interface  
characteristics of this drive. Cheetah 15K.7 FC drives are classified as intelligent peripherals and provide level 2  
conformance (highest level) with the ANSI SCSI-1 standard.  
Cheetah 15K.7 FC SED models have provisions for “Security of Data at Rest” based on the standards defined by the Trusted  
Computing Group (see www.trustedcomputinggroup.org).  
Note. Never disassemble the HDA and do not attempt to service items in the sealed enclosure (heads, media, actuator,  
etc.) as this requires special facilities. The drive does not contain user-replaceable parts. Opening the HDA for  
any reason voids your warranty.  
Cheetah 15K.7 FC drives use a dedicated landing zone at the innermost radius of the media to eliminate the possibility of  
destroying or degrading data by landing in the data zone. The heads automatically go to the landing zone when power is  
removed from the drive.  
An automatic shipping lock prevents potential damage to the heads and discs that results from movement during shipping  
and handling. The shipping lock disengages and the head load process begins when power is applied to the drive.  
The drives also use a high-performance actuator assembly with a low-inertia, balanced, patented, straight arm design that  
provides excellent performance with minimal power dissipation.  
CHEETAH 15K.7 FC PRODUCT MANUAL, REV. E  
6
       
3.1  
STANDARD FEATURES  
Cheetah 15K.7 FC drives have the following standard features:  
• 4-Gbit Fibre Channel interface  
• Integrated dual port FC-AL controller  
• Concurrent dual port transfers  
• Support for FC arbitrated loop, private and public attachment  
• Differential copper FC drivers and receivers  
• Downloadable firmware using the FC-AL interface  
• Supports SCSI enclosure services via interface connector  
• 128-deep task set (queue)  
• Supports up to 32 initiators  
• Drive selection ID and configuration options are set on the FC-AL backpanel or through interface commands. Jumpers are  
not used on the drive.  
• Supports SCSI Enclosure Services through the interface connector  
• Fibre Channel worldwide name uniquely identifies the drive and each port  
• User-selectable logical block size (512, 520, 524, or 528 bytes per logical block)  
• Selectable frame sizes from 256 to 2,112 bytes  
• Industry standard 3.5-inch low profile form factor dimensions  
• Programmable logical block reallocation scheme  
• Flawed logical block reallocation at format time  
• Programmable auto write and read reallocation  
• Reed-Solomon error correction code  
• Sealed head and disk assembly (HDA)  
• No preventive maintenance or adjustments required  
• Dedicated head landing zone  
• Automatic shipping lock  
• Embedded Grey Code track address to eliminate seek errors  
• Self-diagnostics performed at power on  
• Zone bit recording (ZBR)  
• Vertical, horizontal, or top down mounting  
• Dynamic spindle brake  
• 16,384 Kbyte data buffer (see Section 4.5)  
• Embedded servo design  
• Reallocation of defects on command (Post Format)  
• Fibre Channel interface transports SCSI protocol  
Cheetah 15K.7 FC SED models have the following additional features :  
• Automatic data encryption/decryption  
• Controlled access  
• Random number generator  
• Drive locking  
• 16 independent data bands  
• Cryptographic erase of user data for a drive that will be repurposed or scrapped  
• Authenticated firmware download  
CHEETAH 15K.7 FC PRODUCT MANUAL, REV. E  
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3.2  
MEDIA DESCRIPTION  
The media used on the drive has an aluminum substrate coated with a thin film magnetic material, overcoated with a  
proprietary protective layer for improved durability and environmental protection.  
3.3  
PERFORMANCE  
• Programmable multi-segmentable cache buffer  
• 400 Mbytes/sec maximum instantaneous data transfers per port  
• 15k RPM spindle; average latency = 2.0 msec  
• Command queuing of up to 128 commands  
• Background processing of queue  
• Supports start and stop commands (spindle stops spinning)  
• Adaptive seek velocity; improved seek performance  
Note. There is no significant performance difference between Self-Encrypting Drive and standard (non-Self-Encrypting  
Drive) models  
3.4  
RELIABILITY  
• Annualized Failure Rate (AFR) of 0.55%  
• Increased LSI circuitry integration  
• Self-Monitoring Analysis and Reporting Technology (S.M.A.R.T.)  
• Dithering  
• 5-year warranty  
3.5  
FORMATTED CAPACITIES  
Standard OEM models are formatted to 512 bytes per block. The block size is selectable at format time and must be one of  
the supported sizes listed in the table below.  
Seagate designs specify capacity points at certain block sizes that Seagate guarantees current and future products will  
meet. We recommend customers use this capacity in their project planning, as it ensures a stable operating point with  
backward and forward compatibility from generation to generation. The current guaranteed operating points for this product  
are:  
Table 1:  
ST3600057FC  
ST3600957FC  
ST3600857FC  
ST3450857FC  
ST3450757FC  
ST3450657FC  
ST3300657FC  
ST3300557FC  
ST3300457FC  
SECTOR SIZE  
DECIMAL  
HEX  
DECIMAL  
HEX  
DECIMAL  
HEX  
512  
520  
524  
528  
1,172,123,568  
1,147,307,694  
1,132,015,600  
1,115,749,560  
45DD2FB0  
446286AE  
43792FF0  
4280FCB8  
879,097,968  
860,480,771  
849,011,700  
836,812,167  
3465F870  
3349E503  
329AE3F4  
31E0BD87  
585,937,500  
573,653,848  
566,007,800  
557,874,778  
22ECB25C  
22314358  
21BC97F8  
21407E5A  
Seagate drives also may be used at the maximum available capacity at a given block size, but the excess capacity above the  
guaranteed level will vary between other drive families and from generation to generation, depending on how each block size  
actually formats out for zone frequencies and splits over servo bursts. This added capacity potential may range from 0.1 to  
1.3 percent above the guaranteed capacities listed above. Using the drives in this manner gives the absolute maximum  
capacity potential, but the user must determine if the extra capacity potential is useful, or whether their assurance of  
backward and forward compatibility takes precedence.  
CHEETAH 15K.7 FC PRODUCT MANUAL, REV. E  
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3.5.1 Programmable drive capacity  
Using the Mode Select command, the drive can change its capacity to something less than maximum. See the Mode Select  
Parameter List table in the SCSI Commands Reference Manual. Refer to the Parameter list block descriptor number of  
blocks field. A value of zero in the number of blocks field indicates that the drive shall not change the capacity it is currently  
formatted to have. A number in the number of blocks field that is less than the maximum number of LBAs changes the total  
drive capacity to the value in the block descriptor number of blocks field. A value greater than the maximum number of LBAs  
is rounded down to the maximum capacity.  
3.6  
FACTORY-INSTALLED OPTIONS  
You may order the following items which are incorporated at the manufacturing facility during production or packaged before  
shipping. Some of the options available are (not an exhaustive list of possible options):  
• Other capacities can be ordered depending on sparing scheme and sector size requested.  
• Single-unit shipping pack. The drive is normally shipped in bulk packaging to provide maximum protection against transit  
damage. Units shipped individually require additional protection as provided by the single unit shipping pack. Users plan-  
ning single unit distribution should specify this option.  
• The Safety and Regulatory Agency Specifications, part number 75789512, is usually included with each standard OEM  
drive shipped, but extra copies may be ordered.  
3.7  
USER-INSTALLED ACCESSORIES  
The following accessories are available. All kits may be installed in the field.  
• Evaluation kit, part number 73473641.  
This kit provides an adapter card (“T-card”) to allow cable connections for two FC ports and DC power.  
• Single-unit shipping pack.  
CHEETAH 15K.7 FC PRODUCT MANUAL, REV. E  
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4.0 PERFORMANCE CHARACTERISTICS  
This section provides detailed information concerning performance-related characteristics and features of Cheetah 15K.7 FC  
drives.  
4.1  
INTERNAL DRIVE CHARACTERISTICS  
ST3600057FC ST3450857FC ST3300657FC  
ST3600957FC ST3450757FC ST3300557FC  
ST3600857FC ST3450657FC ST3300457FC  
*
Drive capacity  
600  
450  
300  
Gbytes (formatted, rounded off value)  
Read/write data heads  
Tracks per inch  
Peak bits per inch  
Areal Density  
8
6
4
165,000  
1,361  
225  
165,000  
1,361  
225  
165,000  
1,361  
225  
TPI  
KBPI  
Gbits/inch  
2
Internal data rate  
disk rotation speed  
Avg rotational latency  
1.49 - 2.37  
15k  
2.0  
1.49 - 2.37  
15k  
2.0  
1.49 - 2.37  
15k  
2.0  
Gbits/sec (max)  
RPM  
msec  
*One Gbyte equals one billion bytes when referring to hard drive capacity. Accessible capacity may vary depending on operating environment and formatting.  
4.2  
SEEK PERFORMANCE CHARACTERISTICS  
See Section 11.5, "FC-AL physical interface" on page 56 and the Fibre Channel Interface Manual (part number 77767496)  
for additional timing details.  
4.2.1 Access time  
NOT INCLUDING CONTROLLER  
1 2  
,
OVERHEAD (MSEC)  
READ  
3.4  
WRITE  
3.9  
Average  
Typical  
Typical  
Typical  
Single track  
Full stroke  
0.2  
0.44  
7.4  
6.6  
1.  
2.  
Typical access times are measured under nominal conditions of temperature, voltage, and  
horizontal orientation as measured on a representative sample of drives.  
Access to data = access time + latency time.  
CHEETAH 15K.7 FC PRODUCT MANUAL, REV. E  
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4.2.2 Format command execution time (minutes)  
When changing sector sizes, the format times shown below may need to be increased by 30 minutes.  
ST3600057FC  
ST3450857FC  
ST3300657FC  
119  
60  
88  
44  
58  
29  
Maximum (with verify)  
Maximum (without verify)  
Note. There is approximately a 1.5 increase in time to format a SED drive versus a non-SED drive of the same capacity.  
4.2.3 General performance characteristics  
Sustainable disk transfer rate*:  
Minimum  
Maximum  
122 Mbytes/sec (typical)  
204 Mbytes/sec (typical)  
Fibre Channel Interface maximum instantaneous transfer rate  
Logical block sizes  
400 Mbytes/sec* per port  
Default is 512-byte data blocks  
Sector sizes variable to 512, 520, 524 and 528 bytes.  
Read/write consecutive sectors on a track  
Yes  
Flaw reallocation performance impact (for flaws reallocated at format time Negligible  
using the spare sectors per sparing zone reallocation scheme.)  
Average rotational latency  
2.0 msec  
*Assumes no errors and no relocated logical blocks.  
Rate measured from the start of the first logical block transfer to or from the host.  
1MB/sec = 1,000,000 bytes/sec  
4.3  
START/STOP TIME  
If the Motor Start option is disabled, the drive becomes ready within 20 seconds after DC power is applied. If a recoverable  
error condition is detected during the start sequence, the drive executes a recovery procedure and the time to become ready  
may exceed 20 seconds. During spin up to ready time, the drive responds to some commands over the FC interface in less  
than 3 seconds after application of power. Stop time is 30 seconds (maximum) from removal of DC power.  
If the Motor Start option is enabled, the internal controller accepts the commands listed in the Fibre Channel Interface  
Manual less than 3 seconds after DC power has been applied. After the Motor Start command has been received, the drive  
becomes ready for normal operations within 20 seconds (excluding the error recovery procedure). The Motor Start command  
can also be used to command the drive to stop the spindle.  
There is no power control switch on the drive.  
CHEETAH 15K.7 FC PRODUCT MANUAL, REV. E  
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4.4  
PREFETCH/MULTI-SEGMENTED CACHE CONTROL  
The drive provides a prefetch (read look-ahead) and multi-segmented cache control algorithms that in many cases can  
enhance system performance. Cache refers to the drive buffer storage space when it is used in cache operations. To select  
this feature, the host sends the Mode Select command with the proper values in the applicable bytes in page 08h. Prefetch  
and cache operations are independent features from the standpoint that each is enabled and disabled independently using  
the Mode Select command; however, in actual operation, the prefetch feature overlaps cache operation somewhat as  
All default cache and prefetch mode parameter values (Mode Page 08h) for standard OEM versions of this drive family are  
4.5  
CACHE OPERATION  
Note. Refer to the Fibre Channel Interface Manual for more detail concerning the cache bits.  
Of the 16 Mbytes physical buffer space in the drive, approximately 13,000 kbytes can be used as a cache. The buffer is  
divided into logical segments from which data is read and to which data is written.  
The drive keeps track of the logical block addresses of the data stored in each segment of the buffer. If the cache is enabled  
(see RCD bit in the FC Interface Manual), data requested by the host with a read command is retrieved from the buffer, if  
possible, before any disk access is initiated. If cache operation is not enabled, the buffer is still used, but only as circular  
buffer segments during disk medium read operations (disregarding Prefetch operation for the moment). That is, the drive  
does not check in the buffer segments for the requested read data, but goes directly to the medium to retrieve it. The  
retrieved data merely passes through some buffer segment on the way to the host. All data transfers to the host are in  
accordance with buffer-full ratio rules. See the explanation provided with the information about Mode Page 02h (disconnect/  
reconnect control) in the Fibre Channel Interface Manual.  
The following is a simplified description of the prefetch/cache operation:  
Case A—read command is received and all of the requested logical blocks are already in the cache:  
1. Drive transfers the requested logical blocks to the initiator.  
Case B—A Read command requests data, and at least one requested logical block is not in any segment of the cache:  
1. The drive fetches the requested logical blocks from the disk and transfers them into a segment, and then from there to  
the host in accordance with the Mode Select Disconnect/Reconnect parameters, page 02h.  
2. If the prefetch feature is enabled, refer to section 4.5.2 for operation from this point.  
Each cache segment is actually a self-contained circular buffer whose length is an integer number of logical blocks. The  
drive dynamically creates and removes segments based on the workload. The wrap-around capability of the individual  
segments greatly enhances the cache’s overall performance.  
Note. The size of each segment is not reported by Mode Sense command page 08h, bytes 14 and 15. The value  
0XFFFF is always reported regardless of the actual size of the segment. Sending a size specification using the  
Mode Select command (bytes 14 and 15) does not set up a new segment size. If the STRICT bit in Mode page  
00h (byte 2, bit 1) is set to one, the drive responds as it does for any attempt to change an unchangeable param-  
eter.  
CHEETAH 15K.7 FC PRODUCT MANUAL, REV. E  
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4.5.1 Caching write data  
Write caching is a write operation by the drive that makes use of a drive buffer storage area where the data to be written to  
the medium is stored while the drive performs the Write command.  
If read caching is enabled (RCD=0), then data written to the medium is retained in the cache to be made available for future  
read cache hits. The same buffer space and segmentation is used as set up for read functions. The buffer segmentation  
scheme is set up or changed independently, having nothing to do with the state of RCD. When a write command is issued, if  
RCD=0, the cache is first checked to see if any logical blocks that are to be written are already stored in the cache from a  
previous read or write command. If there are, the respective cache segments are cleared. The new data is cached for  
subsequent Read commands.  
If the number of write data logical blocks exceed the size of the segment being written into, when the end of the segment is  
reached, the data is written into the beginning of the same cache segment, overwriting the data that was written there at the  
beginning of the operation; however, the drive does not overwrite data that has not yet been written to the medium.  
If write caching is enabled (WCE=1), then the drive may return Good status on a write command after the data has been  
transferred into the cache, but before the data has been written to the medium. If an error occurs while writing the data to the  
medium, and Good status has already been returned, a deferred error will be generated.  
The Synchronize Cache command may be used to force the drive to write all cached write data to the medium. Upon  
completion of a Synchronize Cache command, all data received from previous write commands will have been written to the  
medium.  
4.5.2 Prefetch operation  
If the Prefetch feature is enabled, data in contiguous logical blocks on the disk immediately beyond that which was requested  
by a Read command are retrieved and stored in the buffer for immediate transfer from the buffer to the host on subsequent  
Read commands that request those logical blocks (this is true even if cache operation is disabled). Though the prefetch  
operation uses the buffer as a cache, finding the requested data in the buffer is a prefetch hit, not a cache operation hit.  
To enable Prefetch, use Mode Select page 08h, byte 12, bit 5 (Disable Read Ahead - DRA bit). DRA bit = 0 enables prefetch.  
The drive does not use the Max Prefetch field (bytes 8 and 9) or the Prefetch Ceiling field (bytes 10 and 11).  
When prefetch (read look-ahead) is enabled (enabled by DRA = 0), the drive enables prefetch of contiguous blocks from the  
disk when it senses that a prefetch hit will likely occur. The drive disables prefetch when it decides that a prefetch hit is not  
likely to occur.  
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5.0 RELIABILITY SPECIFICATIONS  
The following reliability specifications assume correct host and drive operational interface, including all interface timings,  
power supply voltages, environmental requirements and drive mounting constraints.  
Seek error rate:  
Less than 10 errors in 108 seeks  
Read Error Rates  
Recovered Data  
Less than 10 errors in 1012 bits transferred (OEM default settings)  
Less than 1 sector in 1016 bits transferred  
Less than 1 sector in 1021 bits transferred  
Unrecovered Data  
Miscorrected Data  
Interface error rate:  
Less than 1 error in 1012 bits transferred with minimum receive eye.  
Less than 1 error in 1014 bits transferred with typical receive eye.  
Annualized Failure Rate (AFR):  
Preventive maintenance:  
0.55%  
None required  
5.1  
ERROR RATES  
The error rates stated in this manual assume the following:  
• The drive is operated in accordance with this manual using DC power as defined in paragraph 6.2, "DC power require-  
• Errors caused by host system failures are excluded from error rate computations.  
• Assume random data.  
• Default OEM error recovery settings are applied. This includes AWRE, ARRE, full read retries, full write retries and full retry  
time.  
• Error rate specified with automatic retries and data correction with ECC enabled and all flaws reallocated.  
5.1.1 Recoverable Errors  
Recovereable errors are those detected and corrected by the drive, and do not require user intervention.  
Recoverable Data errors use retries and correction. Application of ECC on-the-fly correction alone is not considered a  
Recovered Data error.  
Recovered Data error rate is determined using read bits transferred for recoverable errors occurring during a read, and using  
write bits transferred for recoverable errors occurring during a write.  
5.1.2 Unrecoverable Errors  
16  
Unrecoverable Data Errors (Sense Key = 03h) are specified at less than 1 sector in error per 10 bits transferred.  
Unrecoverable Data Errors resulting from the same cause are treated as 1 error for that block.  
5.1.3 Seek errors  
A seek error is defined as a failure of the drive to position the heads to the addressed track. After detecting an initial seek  
error, the drive automatically performs an error recovery process. If the error recovery process fails, a seek positioning error  
(Error code = 15h or 02h) will be reported with a Hardware error (04h) in the Sense Key. Recoverable seek errors are  
8
specified at Less than 10 errors in 10 seeks. Unrecoverable seek errors (Sense Key = 04h) are classified as drive failures.  
5.1.4 Interface errors  
An interface error is defined as a failure of the receiver on a port to recover the data as transmitted by the device port  
connected to the receiver. The error may be detected as a running disparity error, illegal code, loss of word sync, or CRC  
error. The total error rate for a loop of devices is the sum of the individual device error rates.  
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5.2  
RELIABILITY AND SERVICE  
You can enhance the reliability of Constellation ES.3 SAS disk drives by ensuring that the drive receives adequate cooling.  
5.2.1 Annualized Failure Rate (AFR) and Mean Time Between Failures (MTBF)  
These drives shall achieve an AFR of 0.55% (MTBF of 1,600,000 hours) when operated in an environment that ensures the  
and MTBF statistics are poplulation statistics that are not relevant to individual units.  
AFR and MTBF specifications are based on the following assumptions for Enterprise Storage System environments:  
• 8,760 power-on hours per year  
• 250 average on/off cycles per year  
• Operating at nominal voltages  
• System provides adequate cooling to ensure the case temperatures specified in Section 6.4.1 are not exceeded.  
5.2.2 Preventive maintenance  
No routine scheduled preventive maintenance is required.  
5.2.3 Hot plugging the drive  
Inserting and removing the drive on the FC-AL will interrupt loop operation. The interruption occurs when the receiver of the  
next device in the loop must synchronize to a different input signal. FC error detection mechanisms, character sync, running  
disparity, word sync, and CRC are able to detect any error. Recovery is initiated based on the type of error.  
The disk drive defaults to the FC-AL Monitoring state, Pass-through state, when it is powered-on by switching the power or  
hot plugged. The control line to an optional port bypass circuit (external to the drive), defaults to the Enable Bypass state. If  
the bypass circuit is present, the next device in the loop will continue to receive the output of the previous device to the newly  
inserted device. If the bypass circuit is not present, loop operation is temporarily disrupted until the next device starts  
receiving the output from the newly inserted device and regains synchronization to the new input.  
The Pass-through state is disabled while the drive performs self test of the FC interface. The control line for an external port  
bypass circuit remains in the Enable Bypass state while self test is running. If the bypass circuit is present, loop operation  
may continue. If the bypass circuit is not present, loop operation will be halted while the self test of the FC interface runs.  
When the self test completes successfully, the control line to the bypass circuit is disabled and the drive enters the FC-AL  
Initializing state. The receiver on the next device in the loop must synchronize to output of the newly inserted drive.  
If the self-test fails, the control line to the bypass circuit remains in the Enable Bypass state.  
Note. It is the responsibility of the systems integrator to assure that no temperature, energy, voltage hazard, or ESD  
potential hazard is presented during the hot connect/disconnect operation. Discharge the static electricity from  
the drive carrier prior to inserting it into the system.  
Caution. The drive motor must come to a complete stop prior to changing the plane of operation. This time is required to  
insure data integrity.  
5.2.4 S.M.A.R.T.  
S.M.A.R.T. is an acronym for Self-Monitoring Analysis and Reporting Technology. This technology is intended to recognize  
conditions that indicate imminent drive failure and is designed to provide sufficient warning of a failure to allow you to back up  
the data before an actual failure occurs.  
Note. The drive’s firmware monitors specific attributes for degradation over time but can’t predict instantaneous drive  
failures.  
Each monitored attribute has been selected to monitor a specific set of failure conditions in the operating performance of the  
drive and the thresholds are optimized to minimize “false” and “failed” predictions.  
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Controlling S.M.A.R.T.  
The operating mode of S.M.A.R.T. is controlled by the DEXCPT and PERF bits on the Informational Exceptions Control  
mode page (1Ch). Use the DEXCPT bit to enable or disable the S.M.A.R.T. feature. Setting the DEXCPT bit disables all  
S.M.A.R.T. functions. When enabled, S.M.A.R.T. collects on-line data as the drive performs normal read and write  
operations. When the PERF bit is set, the drive is considered to be in “On-line Mode Only” and will not perform off-line  
functions.  
You can measure off-line attributes and force the drive to save the data by using the Rezero Unit command. Forcing  
S.M.A.R.T. resets the timer so that the next scheduled interrupt is in two hours.  
You can interrogate the drive through the host to determine the time remaining before the next scheduled measurement and  
data logging process occurs. To accomplish this, issue a Log Sense command to log page 0x3E. This allows you to control  
when S.M.A.R.T. interruptions occur. Forcing S.M.A.R.T. with the RTZ command resets the timer.  
Performance impact  
S.M.A.R.T. attribute data is saved to the disk so that the events that caused a predictive failure can be recreated. The drive  
measures and saves parameters once every two hours subject to an idle period on the FC-AL bus. The process of  
measuring off-line attribute data and saving data to the disk is uninterruptable. The maximum on-line only processing delay is  
summarized below:  
Table 2:  
Maximum processing delay  
On-line only delay  
Fully-enabled delay  
DEXCPT = 0, PERF = 1  
DEXCPT = 0, PERF = 0  
42 milliseconds  
S.M.A.R.T. delay times  
163 milliseconds  
Reporting control  
Reporting is controlled by the MRIE bits in the Informational Exceptions Control mode page (1Ch). Subject to the reporting  
method, the firmware will issue to the host an 01-5Dxx sense code. The error code is preserved through bus resets and  
power cycles.  
Determining rate  
S.M.A.R.T. monitors the rate at which errors occur and signals a predictive failure if the rate of degraded errors increases to  
an unacceptable level. To determine rate, error events are logged and compared to the number of total operations for a given  
attribute. The interval defines the number of operations over which to measure the rate. The counter that keeps track of the  
current number of operations is referred to as the Interval Counter.  
S.M.A.R.T. measures error rates. All errors for each monitored attribute are recorded. A counter keeps track of the number of  
errors for the current interval. This counter is referred to as the Failure Counter.  
Error rate is the number of errors per operation. The algorithm that S.M.A.R.T. uses to record rates of error is to set  
thresholds for the number of errors and their interval. If the number of errors exceeds the threshold before the interval  
expires, the error rate is considered to be unacceptable. If the number of errors does not exceed the threshold before the  
interval expires, the error rate is considered to be acceptable. In either case, the interval and failure counters are reset and  
the process starts over.  
Predictive failures  
S.M.A.R.T. signals predictive failures when the drive is performing unacceptably for a period of time. The firmware keeps a  
running count of the number of times the error rate for each attribute is unacceptable. To accomplish this, a counter is  
incremented each time the error rate is unacceptable and decremented (not to exceed zero) whenever the error rate is  
acceptable. If the counter continually increments such that it reaches the predictive threshold, a predictive failure is signaled.  
This counter is referred to as the Failure History Counter. There is a separate Failure History Counter for each attribute.  
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5.2.5 Thermal monitor  
Cheetah 15K.7 FC drives implement a temperature warning system which:  
1. Signals the host if the temperature exceeds a value which would threaten the drive.  
2. Signals the host if the temperature exceeds a user-specified value.  
3. Saves a S.M.A.R.T. data frame on the drive which exceeds the threatening temperature value.  
A temperature sensor monitors the drive temperature and issues a warning over the interface when the temperature  
exceeds a set threshold. The temperature is measured at power-up and then at ten-minute intervals after power-up.  
The thermal monitor system generates a warning code of 01-0B01 when the temperature exceeds the specified limit in  
compliance with the SCSI standard. The drive temperature is reported in the FRU code field of mode sense data. You can  
use this information to determine if the warning is due to the temperature exceeding the drive threatening temperature or the  
user-specified temperature.  
This feature is controlled by the Enable Warning (EWasc) bit, and the reporting mechanism is controlled by the Method of  
Reporting Informational Exceptions field (MRIE) on the Informational Exceptions Control (IEC) mode page (1Ch).  
The current algorithm implements two temperature trip points. The first trip point is set at 68°C which is the maximum  
temperature limit according to the drive specification. The second trip point is user-selectable using the Log Select  
command. The reference temperature parameter in the temperature log page (see Table 1) can be used to set this trip point.  
The default value for this drive is 68°C, however, you can set it to any value in the range of 0 to 68°C. If you specify a  
temperature greater than 68°C in this field, the temperature is rounded down to 68°C. A sense code is sent to the host to  
indicate the rounding of the parameter field.  
Table 1:  
Temperature Log Page (0Dh)  
Parameter Code  
0000h  
Description  
Primary Temperature  
Reference Temperature  
0001h  
5.2.6 Drive Self Test (DST)  
Drive Self Test (DST) is a technology designed to recognize drive fault conditions that qualify the drive as a failed unit. DST  
validates the functionality of the drive at a system level.  
There are two test coverage options implemented in DST:  
1. Extended test  
2. Short test  
The most thorough option is the extended test that performs various tests on the drive and scans every logical block address  
(LBA) of the drive. The short test is time-restricted and limited in length—it does not scan the entire media surface, but does  
some fundamental tests and scans portions of the media.  
If DST encounters an error during either of these tests, it reports a fault condition. If the drive fails the test, remove it from  
service and return it to Seagate for service.  
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5.2.6.1 DST failure definition  
The drive will present a “diagnostic failed” condition through the self-tests results value of the diagnostic log page if a  
functional failure is encountered during DST. The channel and servo parameters are not modified to test the drive more  
stringently, and the number of retries are not reduced. All retries and recovery processes are enabled during the test. If data  
is recoverable, no failure condition will be reported regardless of the number of retries required to recover the data.  
The following conditions are considered DST failure conditions:  
• Seek error after retries are exhausted  
• Track-follow error after retries are exhausted  
• Read error after retries are exhausted  
• Write error after retries are exhausted  
Recovered errors will not be reported as diagnostic failures.  
5.2.6.2 Implementation  
This section provides all of the information necessary to implement the DST function on this drive.  
5.2.6.2.1  
State of the drive prior to testing  
The drive must be in a ready state before issuing the Send Diagnostic command. There are multiple reasons why a drive  
may not be ready, some of which are valid conditions, and not errors. For example, a drive may be in process of doing a  
format, or another DST. It is the responsibility of the host application to determine the “not ready” cause.  
While not technically part of DST, a Not Ready condition also qualifies the drive to be returned to Seagate as a failed drive.  
A Drive Not Ready condition is reported by the drive under the following conditions:  
• Motor will not spin  
• Motor will not lock to speed  
• Servo will not lock on track  
• Drive cannot read configuration tables from the disk  
In these conditions, the drive responds to a Test Unit Ready command with an 02/04/00 or 02/04/03 code.  
5.2.6.2.2  
Invoking DST  
To invoke DST, submit the Send Diagnostic command with the appropriate Function Code (001b for the short test or 010b for  
the extended test) in bytes 1, bits 5, 6, and 7.  
5.2.6.2.3  
Short and extended tests  
DST has two testing options:  
1. short  
2. extended  
These testing options are described in the following two subsections.  
Each test consists of three segments: an electrical test segment, a servo test segment, and a read/verify scan segment.  
Short test (Function Code: 001b)  
The purpose of the short test is to provide a time-limited test that tests as much of the drive as possible within 120 seconds.  
The short test does not scan the entire media surface, but does some fundamental tests and scans portions of the media. A  
complete read/verify scan is not performed and only factual failures will report a fault condition. This option provides a quick  
confidence test of the drive.  
Extended test (Function Code: 010b)  
The objective of the extended test option is to empirically test critical drive components. For example, the seek tests and on-  
track operations test the positioning mechanism. The read operation tests the read head element and the media surface.  
The write element is tested through read/write/read operations. The integrity of the media is checked through a read/verify  
scan of the media. Motor functionality is tested by default as a part of these tests.  
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The anticipated length of the Extended test is reported through the Control Mode page.  
5.2.6.2.4 Log page entries  
When the drive begins DST, it creates a new entry in the Self-test Results Log page. The new entry is created by inserting a  
new self-test parameter block at the beginning of the self-test results log parameter section of the log page. Existing data will  
be moved to make room for the new parameter block. The drive reports 20 parameter blocks in the log page. If there are  
more than 20 parameter blocks, the least recent parameter block will be deleted. The new parameter block will be initialized  
as follows:  
1. The Function Code field is set to the same value as sent in the DST command  
2. The Self-Test Results Value field is set to Fh  
3. The drive will store the log page to non-volatile memory  
After a self-test is complete or has been aborted, the drive updates the Self-Test Results Value field in its Self-Test Results  
Log page in non-volatile memory. The host may use Log Sense to read the results from up to the last 20 self-tests performed  
by the drive. The self-test results value is a 4-bit field that reports the results of the test. If the field is set to zero, the drive  
passed with no errors detected by the DST. If the field is not set to zero, the test failed for the reason reported in the field.  
The drive will report the failure condition and LBA (if applicable) in the Self-test Results Log parameter. The Sense key, ASC,  
ASCQ, and FRU are used to report the failure condition.  
5.2.6.2.5  
Abort  
There are several ways to abort a diagnostic. You can use a SCSI Bus Reset or a Bus Device Reset message to abort the  
diagnostic.  
You can abort a DST executing in background mode by using the abort code in the DST Function Code field. This will cause  
a 01 (self-test aborted by the application client) code to appear in the self-test results values log. All other abort mechanisms  
will be reported as a 02 (self-test routine was interrupted by a reset condition).  
5.2.7 Product warranty  
Beginning on the date of shipment to the customer and continuing for the period specified in your purchase contract,  
Seagate warrants that each product (including components and subassemblies) that fails to function properly under normal  
use due to defect in materials or workmanship or due to nonconformance to the applicable specifications will be repaired or  
replaced, at Seagate’s option and at no charge to the customer, if returned by customer at customer’s expense to Seagate’s  
designated facility in accordance with Seagate’s warranty procedure. Seagate will pay for transporting the repair or  
replacement item to the customer. For more detailed warranty information, refer to the standard terms and conditions of  
purchase for Seagate products on your purchase documentation.  
The remaining warranty for a particular drive can be determined by calling Seagate Customer Service at 1-800-468-3472.  
required to determine remaining warranty information.  
Shipping  
When transporting or shipping a drive, use only a Seagate-approved container. Keep your original box. Seagate approved  
containers are easily identified by the Seagate Approved Package label. Shipping a drive in a non-approved container voids  
the drive warranty.  
Seagate repair centers may refuse receipt of components improperly packaged or obviously damaged in transit. Contact  
your authorized Seagate distributor to purchase additional boxes. Seagate recommends shipping by an air-ride carrier  
experienced in handling computer equipment.  
Product repair and return information  
Seagate customer service centers are the only facilities authorized to service Seagate drives. Seagate does not sanction  
any third-party repair facilities. Any unauthorized repair or tampering with the factory seal voids the warranty.  
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6.0 PHYSICAL/ELECTRICAL SPECIFICATIONS  
This section provides information relating to the physical and electrical characteristics of the drive.  
6.1  
AC POWER REQUIREMENTS  
None.  
6.2  
DC POWER REQUIREMENTS  
The voltage and current requirements for a single drive are shown below. Values indicated apply at the drive connector.  
Notes are shown following the last power requirements table.  
The standard drive models and the SED drive models have identical hardware, however the security and encryption portion  
of the drive controller ASIC is enabled and functional in the SED models. This represents a small additional drain on the 5V  
supply of about 30mA and a commensurate increase of about 150mW in power consumption. There is no additional drain on  
the 12V supply.  
Table 2 ST3600057FC DC power requirements  
2 Gbit  
4 Gbit  
Notes  
(Amps) (Amps) (Amps) (Amps)  
Voltage  
+5V  
±5%  
0.39  
+12V [2] +5V  
±5% [2] ±5%  
+12V [2]  
±5% [2]  
0.81  
Regulation  
[5]  
Avg idle current DCX  
Maximum starting current  
(peak DC) DC  
[1] [7]  
0.81  
0.42  
3s [3]  
3s [3]  
0.67  
1.02  
0.55  
1.93  
3.73  
0.04  
0.70  
1.00  
0.58  
1.92  
3.61  
0.04  
(peak AC) AC  
Delayed motor start (max) 3s [1] [4]  
DC  
Peak operating current:  
Typical DCX  
[1] [6]  
3s [1]  
3s  
0.48  
0.50  
1.30  
1.18  
1.19  
3.00  
0.51  
0.53  
1.32  
1.17  
1.19  
2.98  
Maximum DC  
Maximum (peak) DC  
Table 3 ST3450857FC DC power requirements  
2 Gbit  
4 Gbit  
Notes (Amps) (Amps) (Amps) (Amps)  
Voltage  
+5V  
+12V [2] +5V  
±5% [2] ±5%  
+12V [2]  
±5% [2]  
0.69  
Regulation  
[5]  
±5%  
Avg idle current DCX  
Maximum starting current  
(peak DC) DC  
[1] [7] 0.40  
0.69  
0.42  
3s [3]  
3s [3]  
0.69  
1.08  
1.85  
3.77  
0.04  
0.72  
1.08  
0.61  
1.85  
3.49  
0.04  
(peak AC) AC  
Delayed motor start (max) 3s [1] [4] 0.58  
DC  
Peak operating current:  
Typical DCX  
[1] [6] 0.49  
1.04  
1.07  
2.80  
0.53  
0.57  
1.40  
1.03  
1.07  
2.84  
Maximum DC  
3s [1]  
3s  
0.53  
1.36  
Maximum (peak) DC  
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Table 4 ST3300657FC DC power requirements  
2 Gbit  
4 Gbit  
Note (Amps) (Amps) (Amps)  
s
(Amps)  
Voltage  
+5V  
+12V [2] +5V  
±5% [2] ±5%  
+12V [2]  
±5% [2]  
0.59  
Regulation  
[5]  
±5%  
Avg idle current DCX  
Maximum starting current  
(peak DC) DC  
[1] [7] 0.39  
0.59  
0.39  
3s [3]  
3s [3]  
0.62  
0.96  
1.91  
3.75  
0.04  
0.62  
0.98  
0.56  
1.91  
3.57  
0.04  
(peak AC) AC  
Delayed motor start (max) 3s [1] [4] 0.56  
DC  
Peak operating current:  
Typical DCX  
[1] [6] 0.48  
0.92  
1.00  
2.80  
0.48  
0.53  
1.32  
0.91  
0.95  
2.72  
Maximum DC  
3s [1]  
3s  
0.53  
1.32  
Maximum (peak) DC  
[1] Measured with average reading DC ammeter. Instantaneous +12V current peaks will exceed these values. Power sup-  
ply at nominal voltage. N (number of drives tested) = 6, 35 Degrees C ambient.  
[2] For +12 V, a –10% tolerance is allowed during initial spindle start but must return to ±5% before reaching 15000 RPM.  
The ±5% must be maintained after the drive signifies that its power-up sequence has been completed and that the drive  
is able to accept selection by the host initiator.  
[3] See +12V current profile in Figure 1.  
[4] This condition occurs when the Motor Start option is enabled and the drive has not yet received a Start Motor command.  
[5] See paragraph 6.2.1, "Conducted noise immunity." Specified voltage tolerance includes ripple, noise, and transient  
response.  
[6] Operating condition is defined as random 8 block reads at 375 I/Os per second for 600GB models and 380 I/Os per sec-  
ond for 450GB and 300GB models. Current and power specified at nominal voltages.  
[7] During idle, the drive heads are relocated every 60 seconds to a random location within the band from three-quarters to  
maximum track.  
General DC power requirement notes.  
1. Minimum current loading for each supply voltage is not less than 1.2% of the maximum operating current shown.  
2. The +5V and +12V supplies should employ separate ground returns.  
3. Where power is provided to multiple drives from a common supply, careful consideration for individual drive power  
requirements should be noted. Where multiple units are powered on simultaneously, the peak starting current must be  
available to each device.  
4. Parameters, other than spindle start, are measured after a 10-minute warm up.  
5. No terminator power.  
6.2.1 Conducted noise immunity  
Noise is specified as a periodic and random distribution of frequencies covering a band from DC to 10 MHz. Maximum  
allowed noise values given below are peak-to-peak measurements and apply at the drive power connector.  
+5 V = 250 mV pp from 100 Hz to 20 MHz.  
+12 V = 800 mV pp from 100 Hz to 8 KHz.  
450 mV pp from 8 KHz to 20 KHz.  
250 mV pp from 20 KHz to 5 MHz.  
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6.2.2 Power sequencing  
The drive does not require power sequencing. The drive protects against inadvertent writing during power-up and down.  
6.2.3 Current profiles  
The +12V and +5V current profiles are shown in the following figures.  
Figure 1. Typical ST3600057FC current profiles  
CHEETAH 15K.7 FC PRODUCT MANUAL, REV. E  
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Figure 2.  
Typical ST3450857FC current profiles  
Figure 3.  
Typical ST3300657FC current profiles  
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6.3  
POWER DISSIPATION  
600GB model  
Typical power dissipation under idle conditions in 4 Gbit operation is 11.58 watts (39.52 BTUs per hour).  
typical I/O rate for a drive in your system on the horizontal axis and read the corresponding +5 volt current, +12 volt current,  
and total watts on the vertical axis. To calculate BTUs per hour, multiply watts by 3.4123.  
Figure 4.  
ST3600057FC DC current and power vs. input/output operations per second  
450GB models  
Typical power dissipation under idle conditions in 4 Gbit operation is 10.24 watts (34.94 BTUs per hour).  
typical I/O rate for a drive in your system on the horizontal axis and read the corresponding +5 volt current, +12 volt current,  
and total watts on the vertical axis. To calculate BTUs per hour, multiply watts by 3.4123.  
Figure 5.  
ST3450857FC DC current and power vs. input/output operations per second  
CHEETAH 15K.7 FC PRODUCT MANUAL, REV. E  
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300GB models  
Typical power dissipation under idle conditions in 4 Gbit operation is 9.06 watts (30.92 BTUs per hour).  
typical I/O rate for a drive in your system on the horizontal axis and read the corresponding +5 volt current, +12 volt current,  
and total watts on the vertical axis. To calculate BTUs per hour, multiply watts by 3.4123.  
Figure 6.  
ST3300657FC DC current and power vs. input/output operations per second  
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6.4  
ENVIRONMENTAL LIMITS  
Temperature and humidity values experienced by the drive must be such that condensation does not occur on any drive part.  
Altitude and atmospheric pressure specifications are referenced to a standard day at 58.7°F (14.8°C). Maximum wet bulb  
temperature is 82°F (28°C).  
6.4.1 Temperature  
a. Operating  
The maximum allowable continuous or sustained HDA case temperature for the rated Annualized Failure Rate (AFR) is  
122°F (50°C). The maximum allowable HDA case temperature is 60°C. Occasional excursions of HDA case  
temperatures above 122°F (50°C) or below 41°F (5°C) may occur without impact to the specified AFR. Continual or  
sustained operation at HDA case temperatures outside these limits may degrade AFR.  
Provided the HDA case temperatures limits are met, the drive meets all specifications over a 41°F to 131°F (5°C to 55°C)  
drive ambient temperature range with a maximum temperature gradient of 68°F (20°C) per hour. Air flow may be needed  
in the drive enclosure to keep within this range (see Section 8.3). Operation at HDA case temperatures outside this  
range may adversely affect the drives ability to meet specifications. To confirm that the required cooling for the electronics  
and HDA case is provided, place the drive in its final mechanical configuration, perform random write/read operations and  
measure the HDA case temperature after it has stabilized.  
b. Non-operating  
–40° to 158°F (–40° to 70°C) package ambient with a maximum gradient of 68°F (20°C) per hour. This specification  
assumes that the drive is packaged in the shipping container designed by Seagate for use with drive.  
HDA Temp.  
1.  
0
.5  
Check Point  
Figure 7.  
Locations of the HDA temperature check point  
6.4.2 Relative humidity  
The values below assume that no condensation on the drive occurs.  
a. Operating  
5% to 95% non-condensing relative humidity with a maximum gradient of 20% per hour.  
b. Non-operating  
5% to 95% non-condensing relative humidity.  
6.4.3 Effective altitude (sea level)  
a. Operating  
–1,000 to +10,000 feet (–305 to +3,048 meters)  
b. Non-operating  
–1,000 to +40,000 feet (–305 to +12,210 meters)  
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6.4.4 Shock and vibration  
Shock and vibration limits specified in this document are measured directly on the drive chassis. If the drive is installed in an  
enclosure to which the stated shock and/or vibration criteria is applied, resonances may occur internally to the enclosure  
resulting in drive movement in excess of the stated limits. If this situation is apparent, it may be necessary to modify the  
enclosure to minimize drive movement.  
The limits of shock and vibration defined within this document are specified with the drive mounted by any of the four  
connector may be up or down.  
6.4.4.1 Shock  
a. Operating—normal  
The drive, as installed for normal operation, shall operate error free while subjected to intermittent shock not exceeding:  
• 15 Gs at a duration of 11 msec (half sinewave)  
• 20 Gs at a duration of 2 msec (half sinewave)  
• 60 Gs at a duration of 2 msec (half sinewave) when performing reads only  
Shock may be applied in the X, Y, or Z axis. Shock is not to be repeated more than once every 2 seconds.  
b. Operating—abnormal  
Equipment, as installed for normal operation, does not incur physical damage while subjected to intermittent shock not  
exceeding 40 Gs at a duration of 11 msec (half sinewave). Shock occurring at abnormal levels may promote degraded  
operational performance during the abnormal shock period. Specified operational performance will continue when normal  
operating shock levels resume. Shock may be applied in the X, Y, or Z axis. Shock is not to be repeated more than once  
every 2 seconds.  
c. Non-operating  
The limits of non-operating shock shall apply to all conditions of handling and transportation. This includes both isolated  
drives and integrated drives.  
The drive subjected to nonrepetitive shock not exceeding the three values below, shall not exhibit device damage or  
performance degradation.  
• 80 Gs at a duration of 11 msec (half sinewave)  
• 300 Gs at a duration of 2 msec (half sinewave)  
• 150 Gs at a duration of 0.5 msec (half sinewave)  
Shock may be applied in the X, Y, or Z axis.  
d. Packaged  
Disk drives shipped as loose load (not palletized) general freight will be packaged to withstand drops from heights as  
defined in the table below. For additional details refer to Seagate specifications 30190-001 (under 100 lbs/45 kg) or  
30191-001 (over 100 lbs/45 Kg).  
PACKAGE SIZE  
PACKAGED/PRODUCT WEIGHT  
DROP HEIGHT  
<600 cu in (<9,800 cu cm)  
Any  
60 in (1524 mm)  
48 in (1219 mm)  
42 in (1067 mm)  
36 in (914 mm)  
600-1800 cu in (9,800-19,700 cu cm)  
>1800 cu in (>19,700 cu cm)  
>600 cu in (>9,800 cu cm)  
0-20 lb (0 to 9.1 kg)  
0-20 lb (0 to 9.1 kg)  
20-40 lb (9.1 to 18.1 kg)  
Drives packaged in single or multipacks with a gross weight of 20 pounds (8.95 kg) or less by Seagate for general freight  
shipment shall withstand a drop test from 48 inches (1,070 mm) against a concrete floor or equivalent.  
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Z
X
Y
X
Z
Y
Figure 8.  
Recommended mounting  
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6.4.4.2 Vibration  
a. Operating—normal  
The drive as installed for normal operation, shall comply with the complete specified performance while subjected to  
continuous vibration not exceeding  
10 – 300 Hz  
301– 500 Hz  
1.0 G RMS (0 to peak)  
0.5 G RMS (0 to peak)  
Vibration may be applied in the X, Y, or Z axis.  
b. Operating—abnormal  
Equipment as installed for normal operation shall not incur physical damage while subjected to periodic vibration not  
exceeding:  
15 minutes of duration at major resonant frequency  
Vibration occurring at these levels may degrade operational performance during the abnormal vibration period. Specified  
operational performance will continue when normal operating vibration levels are resumed. This assumes system  
recovery routines are available.  
Operating abnormal translational random flat profile  
5 – 500 Hz  
10 - 300 Hz  
0.75 G (0 to peak)  
0.0029 G2/Hz  
c. Non-operating  
The limits of non-operating vibration shall apply to all conditions of handling and transportation. This includes both  
isolated drives and integrated drives.  
The drive shall not incur physical damage or degraded performance as a result of continuous vibration not exceeding  
5 – 22 Hz  
22 - 350 Hz  
350 - 500 Hz  
0.25 G (0 to peak, linear, swept sine, 0.5 octive/min)  
3 G (0 to peak, linear, swept sine, 0.5 octive/min)  
1 G (0 to peak, linear, swept sine, 0.5 octive/min)  
Vibration may be applied in the X, Y, or Z axis.  
6.4.5 Acoustics  
Sound power during idle mode shall be 3.4 bels typical when measured to ISO 7779 specification. Sound power while  
operating shall be 3.8 bels typical when measured to ISO 7779 specification.  
There will not be any discrete tones more than 10 dB above the masking noise on typical drives when measured according  
to Seagate specification 30553-001. There will not be any tones more than 24 dB above the masking noise on any drive.  
6.4.6 Air cleanliness  
The drive is designed to operate in a typical office environment with minimal environmental control.  
6.4.7 Corrosive environment  
Seagate electronic drive components pass accelerated corrosion testing equivalent to 10 years exposure to light industrial  
environments containing sulfurous gases, chlorine and nitric oxide, classes G and H per ASTM B845. However, this  
accelerated testing cannot duplicate every potential application environment.  
Users should use caution exposing any electronic components to uncontrolled chemical pollutants and corrosive chemicals  
as electronic drive component reliability can be affected by the installation environment. The silver, copper, nickel and gold  
films used in Seagate products are especially sensitive to the presence of sulfide, chloride, and nitrate contaminants. Sulfur  
is found to be the most damaging. In addition, electronic components should never be exposed to condensing water on the  
surface of the printed circuit board assembly (PCBA) or exposed to an ambient relative humidity greater than 95%. Materials  
used in cabinet fabrication, such as vulcanized rubber, that can outgas corrosive compounds should be minimized or  
eliminated. The useful life of any electronic equipment may be extended by replacing materials near circuitry with sulfide-free  
alternatives.  
6.4.8 Electromagnetic susceptibility  
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6.5  
MECHANICAL SPECIFICATIONS  
Height:  
Width:  
Depth:  
1.03 in  
4.00 in  
5.79 in  
26.10 mm  
101.60 mm  
147 mm  
Weight (max): 1.76 pounds  
0.80 kilograms  
B
J
H
L
K
// T -Z-  
REF  
S
-Z-  
[1]  
R REF  
Notes:  
[1]  
N -X-  
Mounting holes are 6-32 UNC 2B, three on  
each side and four on the bottom. Max  
screw penetration into side of drive is 0.15  
in. (3.81 mm). Max screw tightening torque  
is 6.0 in-lb (0.6779 nm) with minimum full  
thread engagement of 0.12 in. (3.05 mm).  
A
-Z-  
C
M
-X-  
U -X-  
P
Dimension Table  
Inches  
Millimeters  
A
B
C
D
E
F
1.028 max  
5.787 max  
4.000 .010  
3.750 .010  
0.125 .010  
1.750 .010  
1.122 .020  
4.000 .010  
0.250 .010  
1.638 .010  
0.181  
26.10 max  
147.00 max  
101.60 .25  
95.25 .25  
3.18 .25  
44.45 .25  
28.50 .50  
101.60 .25  
6.35 .25  
41.60 .25  
4.60  
H
J
F
[1]  
K
L
M
N
P
R
S
T
.040  
1.02  
1.625 .020  
1.618  
41.28 .50  
41.10  
0.276 .040  
.015 max  
7.00 1.02  
0.38 max  
0.38 max  
U
.015 max  
E
D
Figure 9.  
Mounting configuration dimensions  
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7.0 ABOUT FIPS  
The Federal Information Processing Standard (FIPS) Publication 140-2 is a U.S. Government Computer Security Standard  
used to accredit cryptographic modules. It is titled 'Security Requirements for Cryptographic Modules (FIPS PUB 140-2)' and  
is issued by the National Institute of Standards and Technology (NIST).  
Purpose  
This standard specifies the security requirements that will be satisfied by a cryptographic module utilized within a security  
system protecting sensitive but unclassified information. The standard provides four increasing, qualitative levels of security:  
Level 1, Level 2, Level 3 and Level 4. These levels are intended to cover the wide range of potential applications and  
environments in which cryptographic modules may be employed.  
Validation Program  
Products that claim conformance to this standard are validated by the Cryptographic Module Validation Program (CMVP)  
which is a joint effort between National Institute of Standards and Technology (NIST) and the Communications Security  
Establishment (CSE) of the Government of Canada. Products validated as conforming to FIPS 140-2 are accepted by the  
Federal agencies of both countries for the protection of sensitive information (United States) or Designated Information  
(Canada).  
In the CMVP, vendors of cryptographic modules use independent, accredited testing laborites to have their modules tested.  
National Voluntary Laboratory Accreditation Program (NVLAP) accredited laboratories perform cryptographic module  
compliance/conformance testing.  
Seagate Enterprise SED  
FIPS 140-2 Level 2 requirements. In order to operate in FIPS Approved Mode of Operation, these SEDs require security  
STM/cmvp/documents/140-1/140val-all.htm  
Security Level 2  
Security Level 2 enhances the physical security mechanisms of a Security Level 1 cryptographic module by adding the  
requirement for tamper-evidence, which includes the use of tamper-evident coatings or seals on removable covers of the  
module. Tamper-evident coatings or seals are placed on a cryptographic module so that the coating or seal must be bro-  
ken to attain physical access to the critical security parameters (CSP) within the module. Tamper-evident seals are placed  
on covers to protect against unauthorized physical access. In addition Security Level 2 requires, at a minimum, role-based  
authentication in which a cryptographic module authenticates the authorization of an operator to assume a specific role  
and perform a corresponding set of services.  
Figure 10. Example of FIPS tamper evidence labels.  
Note. Image is for reference only, may not represent actual drive.  
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8.0 ABOUT SELF-ENCRYPTING DRIVES  
Self-encrypting drives (SEDs) offer encryption and security services for the protection of stored data, commonly known as  
“protection of data at rest.” These drives are compliant with the Trusted Computing Group (TCG) Enterprise Storage  
The Trusted Computing Group (TCG) is an organization sponsored and operated by companies in the computer, storage  
and digital communications industry. Seagate’s SED models comply with the standards published by the TCG.  
To use the security features in the drive, the host must be capable of constructing and issuing the following two SCSI  
commands:  
• Security Protocol Out  
• Security Protocol In  
These commands are used to convey the TCG protocol to and from the drive in their command payloads.  
8.1  
DATA ENCRYPTION  
Encrypting drives use one inline encryption engine for each port, employing AES-128 data encryption in Cipher Block  
Chaining (CBC) mode to encrypt all data prior to being written on the media and to decrypt all data as it is read from the  
media. The encryption engines are always in operation, cannot be disabled, and do not detract in any way from the  
performance of the drive.  
The 32-byte Data Encryption Key (DEK) is a random number which is generated by the drive, never leaves the drive, and is  
inaccessible to the host system. The DEK is itself encrypted when it is stored on the media and when it is in volatile  
temporary storage (DRAM) external to the encryption engine. A unique data encryption key is used for each of the drive's  
8.2  
CONTROLLED ACCESS  
The drive has two security partitions (SPs) called the "Admin SP" and the "Locking SP." These act as gatekeepers to the  
drive security services. Security-related commands will not be accepted unless they also supply the correct credentials to  
prove the requester is authorized to perform the command.  
8.2.1 Admin SP  
Admin SP is available using the SID (Secure ID) password or the MSID (Makers Secure ID) password.  
8.2.2 Locking SP  
The Locking SP controls read/write access to the media and the cryptographic erase feature. Access to the Locking SP is  
available using the BandMasterX or EraseMaster passwords. Since the drive owner can define up to 16 data bands on the  
drive, each data band has its own password called BandMasterX where X is the number of the data band (0 through 15).  
8.2.3 Default password  
When the drive is shipped from the factory, all passwords are set to the value of MSID. This 32-byte random value is printed  
on the drive label and it can be read by the host electronically over the I/O. After receipt of the drive, it is the responsibility of  
the owner to use the default MSID password as the authority to change all other passwords to unique owner-specified  
values.  
8.3  
RANDOM NUMBER GENERATOR (RNG)  
The drive has a 32-byte hardware RNG that it is uses to derive encryption keys or, if requested to do so, to provide random  
numbers to the host for system use, including using these numbers as Authentication Keys (passwords) for the drive’s  
Admin and Locking SPs.  
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8.4  
DRIVE LOCKING  
the individual bands.  
The variable "LockOnReset" should be set to "PowerCycle" to ensure that the data bands will be locked if power is lost. This  
scenario occurs if the drive is removed from its cabinet. The drive will not honor any data read or write requests until the  
bands have been unlocked. This prevents the user data from being accessed without the appropriate credentials when the  
drive has been removed from its cabinet and installed in another system.  
When the drive is shipped from the factory, the firmware download port is locked and the drive will reject any attempt to  
download new firmware. The drive owner must use the SID credential to unlock the firmware download port before firmware  
updates will be accepted.  
8.5  
DATA BANDS  
When shipped from the factory, the drive is configured with a single data band called Band 0 (also known as the Global Data  
Band) which comprises LBA 0 through LBA max. The host may allocate Band1 by specifying a start LBA and an LBA range.  
The real estate for this band is taken from the Global Band. An additional 14 Data Bands may be defined in a similar way  
(Band2 through Band15) but before these bands can be allocated LBA space, they must first be individually enabled using  
the EraseMaster password.  
Data bands cannot overlap but they can be sequential with one band ending at LBA (x) and the next beginning at LBA (x+1).  
Each data band has its own drive-generated encryption key and its own user-supplied password. The host may change the  
8.6  
CRYPTOGRAPHIC ERASE  
A significant feature of SEDs is the ability to perform a cryptographic erase. This involves the host telling the drive to change  
the data encryption key for a particular band. Once changed, the data is no longer recoverable since it was written with one  
key and will be read using a different key. Since the drive overwrites the old key with the new one, and keeps no history of  
key changes, the user data can never be recovered. This is tantamount to an instantaneous data erase and is very useful if  
the drive is to be scrapped or redispositioned.  
8.7  
AUTHENTICATED FIRMWARE DOWNLOAD  
In addition to providing a locking mechanism to prevent unwanted firmware download attempts, the drive also only accepts  
download files which have been cryptographically signed by the appropriate Seagate Design Center.  
Three conditions must be met before the drive will allow the download operation:  
1. The download must be an SED file. A standard (base) drive (non-SED) file will be rejected.  
2. The download file must be signed and authenticated.  
3. As with a non-SED drive, the download file must pass the acceptance criteria for the drive. For example it must be appli-  
cable to the correct drive model, and have compatible revision and customer status.  
8.8  
POWER REQUIREMENTS  
The standard drive models and the SED drive models have identical hardware, however the security and encryption portion  
of the drive controller ASIC is enabled and functional in the SED models. This represents a small additional drain on the 5V  
supply of about 30mA and a commensurate increase of about 150mW in power consumption. There is no additional drain on  
8.9  
SUPPORTED COMMANDS  
The SED models support the following two commands in addition to the commands supported by the standard (non-SED)  
models as listed in Table 16:  
• Security Protocol Out (B5h)  
• Security Protocol In (A2h)  
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9.0 DEFECT AND ERROR MANAGEMENT  
Seagate continues to use innovative technologies to manage defects and errors. These technologies are designed to  
increase data integrity, perform drive self-maintenance, and validate proper drive operation.  
SCSI defect and error management involves drive internal defect/error management and FC system error considerations  
(errors in communications between the initiator and the drive). In addition, Seagate provides the following technologies used  
to increase data integrity and drive reliability:  
• Background Media Scan (see Section 9.4)  
• Media Pre-Scan (see Section 9.5)  
• Deferred Auto-Reallocation (see Section 9.6)  
• Idle Read After Write (see Section 9.7)  
The read error rates and specified storage capacities are not dependent on host (initiator) defect management routines.  
9.1  
DRIVE INTERNAL DEFECTS/ERRORS  
During the initial drive format operation at the factory, media defects are identified, tagged as being unusable, and their  
locations recorded on the drive primary defects list (referred to as the “P’ list and also as the ETF defect list). At factory  
format time, these known defects are also reallocated, that is, reassigned to a new place on the medium and the location  
listed in the defects reallocation table. The “P” list is not altered after factory formatting. Locations of defects found and  
reallocated during error recovery procedures after drive shipment are listed in the “G” list (defects growth list). The “P” and  
“G” lists may be referenced by the initiator using the Read Defect Data command.  
Details of the SCSI commands supported by the drive are described in the Fibre Channel Interface Manual. Also, more  
information on the drive Error Recovery philosophy is presented in the Fibre Channel Interface Manual.  
9.2  
DRIVE ERROR RECOVERY PROCEDURES  
When an error occurs during drive operation, the drive, if programmed to do so, performs error recovery procedures to  
attempt to recover the data. The error recovery procedures used depend on the options previously set in the Error Recovery  
Parameters mode page. Error recovery and defect management may involve using several SCSI commands described in  
the Fibre Channel Interface Manual. The drive implements selectable error recovery time limits required in video  
applications.  
The error recovery scheme supported by the drive provides a way to control the total error recovery time for the entire  
command in addition to controlling the recovery level for a single LBA. The total amount of time spent in error recovery for a  
command can be limited using the Recovery Time Limit bytes in the Error Recovery mode page. The total amount of time  
spent in error recovery for a single LBA can be limited using the Read Retry Count or Write Retry Count bytes in the Error  
Recovery mode page.  
The drive firmware error recovery algorithms consists of 13 levels for read recoveries and five levels for write. Each level  
may consist of multiple steps, where a step is defined as a recovery function involving a single re-read or re-write attempt.  
The maximum level used by the drive in LBA recovery is determined by the read and write retry counts.  
Table 5 equates the read and write retry count with the maximum possible recovery time for read and write recovery of  
individual LBAs. The times given do not include time taken to perform reallocations. Reallocations are performed when the  
ARRE bit (for reads) or AWRE bit (for writes) is one, the RC bit is zero, and the recovery time limit for the command has not  
yet been met. Time needed to perform reallocation is not counted against the recovery time limit.  
When the RC bit is one, reallocations are disabled even if the ARRE or AWRE bits are one. The drive will still perform data  
recovery actions within the limits defined by the Read Retry Count, Write Retry Count, and Recovery Time Limit parameters.  
However, the drive does not report any unrecovered errors.  
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Table 5 Read and write retry count maximum recovery times [1]  
WRITE  
READ RETRY MAXIMUM RECOVERY TIME PER LBA  
MAXIMUM RECOVERY TIME PER LBA  
(CUMULATIVE, MSEC)  
RETRY  
COUNT  
(CUMULATIVE, MSEC)  
COUNT  
0
51.87  
0
23.94  
35.91  
39.9  
1
59.85  
1
2
203.49  
231.42  
295.26  
327.18  
359.10  
446.88  
538.65  
570.57  
598.50  
1,534.97  
2
3
3
51.87  
79.8  
4
4
5
5 (default)  
107.73  
6
7
8
9
10  
11 (default)  
[1] These values are subject to change.  
Setting these retry counts to a value below the default setting could result in an increased unrecovered error rate which  
may exceed the value given in this product manual. A setting of zero (0) will result in the drive not performing error  
recovery.  
For example, suppose the Read/Write Recovery page has the RC bit set to 0, read retry count set to 4, and the recovery  
time limit field (Mode Sense page 01, bytes 10 and 11) set to FF FF hex (maximum). A four LBA Read command is  
allowed to take up to 253.11 msec recovery time for each of the four LBAs in the command. If the recovery time limit is  
set to 00 C8 hex (200 msec decimal) a four LBA read command is allowed to take up to 200 msec for all error recovery  
within that command. The use of the Recovery Time Limit field allows finer granularity on control of the time spent in  
error recovery. The recovery time limit only starts counting when the drive is executing error recovery and it restarts on  
each command. Therefore, each command’s total recovery time is subject to the recovery time limit. Note: A recovery  
time limit of 0 will use the drive’s default value of FF FF. Minimum recovery time limit is achieved by setting the Recov-  
ery Time Limit field to 00 01.  
9.3  
FC-AL SYSTEM ERRORS  
Information on the reporting of operational errors or faults across the interface is given in the Fibre Channel Interface  
Manual. The FCP Response returns information to the host about numerous kinds of errors or faults. The Receive  
Diagnostic Results reports the results of diagnostic operations performed by the drive.  
Status returned by the drive to the initiator is described in the Fibre Channel Interface Manual. Status reporting plays a role in  
systems error management and its use in that respect is described in sections where the various commands are discussed.  
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9.4  
BACKGROUND MEDIA SCAN  
Background Media Scan (BMS) is a self-initiated media scan. BMS is defined in the T10 document SPC-4 available from the  
T10 committee. BMS performs sequential reads across the entire pack of the media while the drive is idle. In RAID arrays,  
BMS allows hot spare drives to be scanned for defects prior to being put into service by the host system. On regular duty  
drives, if the host system makes use of the BMS Log Page, it can avoid placing data in suspect locations on the media.  
Unreadable and recovered error sites will be logged or reallocated per ARRE/AWRE settings.  
With BMS, the host system can consume less power and system overhead by only checking BMS status and results rather  
than tying up the bus and consuming power in the process of host-initiated media scanning activity.  
Since the background scan functions are only done during idle periods, BMS causes a negligible impact to system  
performance. The first BMS scan for a newly manufactured drive is performed as quickly as possible to verify the media and  
protect data by setting the “Start time after idle” to 5ms, all subsequent scans begin after 500ms of idle time. Other features  
that normally use idle time to function will function normally because BMS functions for bursts of 800ms and then suspends  
activity for 100ms to allow other background functions to operate.  
BMS interrupts immediately to service host commands from the interface bus while performing reads. BMS will complete any  
BMS-initiated error recovery prior to returning to service host-initiated commands. Overhead associated with a return to host-  
servicing activity from BMS only impacts the first command that interrupted BMS, this results in a typical delay of about 1 ms.  
9.5  
MEDIA PRE-SCAN  
Media Pre-Scan is a feature that allows the drive to repair media errors that would otherwise have been found by the host  
system during critical data accesses early in the drive’s life. The default setting for Media Pre-Scan is enabled on standard  
products. Media Pre-Scan checks each write command to determine if the destination LBAs have been scanned by BMS. If  
the LBAs have been verified, the drive proceeds with the normal write command. If the LBAs have not been verified by BMS,  
Pre-Scan will convert the write to a write verify to certify that the data was properly written to the disk.  
Note. During Pre-Scan write verify commands, write performance may decrease by 50% until Pre-Scan completes.  
Write performance testing should be performed after Pre-Scan is complete. This may be checked by reading the  
BMS status.  
To expedite the scan of the full pack and subsequently exit from the Pre-Scan period, BMS will begin scanning immediately  
when the drive goes to idle during the Pre-Scan period. In the event that the drive is in a high transaction traffic environment  
and is unable to complete a BMS scan within 24 power on hours BMS will disable Pre-Scan to restore full performance to the  
system.  
9.6  
DEFERRED AUTO-REALLOCATION  
Deferred Auto-Reallocation (DAR) simplifies reallocation algorithms at the system level by allowing the drive to reallocate  
unreadable locations on a subsequent write command. Sites are marked for DAR during read operations performed by the  
drive. When a write command is received for an LBA marked for DAR, the auto-reallocation process is invoked and attempts  
to rewrite the data to the original location. If a verification of this rewrite fails, the sector is re-mapped to a spare location.  
This is in contrast to the system having to use the Reassign Command to reassign a location that was unreadable and then  
generate a write command to rewrite the data. DAR is most effective when AWRE and ARRE are enabled—this is the default  
setting from the Seagate factory. With AWRE and ARRE disabled DAR is unable to reallocate the failing location and will  
report an error sense code indicating that a write command is being attempted to a previously failing location.  
9.7  
IDLE READ AFTER WRITE  
Idle Read After Write (IRAW) utilizes idle time to verify the integrity of recently written data. During idle periods, no active  
system requests, the drive reads recently written data from the media and compares it to valid write command data resident  
in the drives data buffer. Any sectors that fail the comparison result in the invocation of a rewrite and auto-reallocation  
process. The process attempts to rewrite the data to the original location. If a verification of this rewrite fails, the sector is re-  
mapped to a spare location.  
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10.0 INSTALLATION  
Cheetah 15K.7 FC disk drive installation is a plug-and-play process. There are no jumpers, switches, or terminators on the  
drive. Simply plug the drive into the host’s 40-pin Fibre Channel backpanel connector (FC-SCA)no cables are required.  
Use the FC-AL interface to select drive ID and all option configurations for devices on the loop.  
If multiple devices are on the same FC-AL and physical addresses are used, set the device selection IDs (SEL IDs) on the  
backpanel so that no two devices have the same selection ID. This is called the hard assigned arbitrated loop physical  
than 0, the device plugged into the backpanel’s SCA connector inherits this AL_PA. In the event you don’t successfully  
assign unique hard addresses (and therefore have duplicate selection IDs assigned to two or more devices), the FC-AL  
generates a message indicating this condition. If you set the AL_PA on the backpanel to a value of 0, the system issues a  
unique soft-assigned physical address automatically.  
Loop initialization is the process used to verify or obtain an address. The loop initialization process is performed when power  
is applied to the drive, when a device is added or removed from the Fibre Channel loop, or when a device times out  
attempting to win arbitration.  
• Set all option selections in the connector prior to applying power to the drive. If you change options after applying power to  
the drive, recycle the drive power to activate the new settings.  
• It is not necessary to low-level format this drive. The drive is shipped from the factory low-level formatted in 512-byte logi-  
cal blocks. You need to reformat the drive only if you want to select a different logical block size.  
10.1 DRIVE ID/OPTION SELECTION  
All drive options are made through the interface connector (J1). Table 24 provides the pin descriptions for the 40-pin Fibre  
Channel single connector (J1).  
10.2 DRIVE ORIENTATION  
The drive may be mounted in any orientation. All drive performance characterizations, however, have been done with the  
drive in horizontal (discs level) and vertical (drive on its side) orientations, which are the two preferred mounting orientations.  
10.3 COOLING  
The host enclosure must dissipate heat from the drive. You should confirm that the host enclosure is designed to ensure that  
forcing or drawing air as shown in the illustrations. Conduction, convection, or other forced air-flow patterns are acceptable  
Above unit  
Under unit  
Above unit  
Under unit  
e
Air flows in the direction shown or  
in reverse direction (side to side)  
e
Air flows in the direction shown (back to front)  
or in reverse direction (front to back)  
Figure 11. Air flow  
CHEETAH 15K.7 FC PRODUCT MANUAL, REV. E  
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10.4 DRIVE MOUNTING  
Mount the drive using the bottom or side mounting holes. If you mount the drive using the bottom holes, ensure that you do  
not physically distort the drive by attempting to mount it on a stiff, non-flat surface.  
The allowable mounting surface stiffness is 80 lb/in (14.0 N/mm). The following equation and paragraph define the allowable  
mounting surface stiffness:  
K x X = F < 15lb = 67N  
where K is the mounting surface stiffness (units in lb/in or N/mm) and X is the out-of-plane surface distortion (units in inches  
or millimeters). The out-of-plane distortion (X) is determined by defining a plane with three of the four mounting points fixed  
and evaluating the out-of-plane deflection of the fourth mounting point when a known force (F) is applied to the fourth point.  
Note. Before mounting the drive in any kind of 3.5-inch to 5.25-inch adapter frame, verify with Seagate Technology that  
the drive can meet the shock and vibration specifications given herein while mounted in such an adapter frame.  
Adapter frames that are available may not have a mechanical structure capable of mounting the drive so that it  
can meet the shock and vibration specifications listed in this manual.  
10.5 GROUNDING  
Signal ground (PCBA) and HDA ground are connected together in the drive and cannot be separated by the user. The  
equipment in which the drive is mounted is connected directly to the HDA and PCBA with no electrically isolating shock  
mounts. If it is desired for the system chassis to not be connected to the HDA/PCBA ground, the systems integrator or user  
must provide a nonconductive (electrically isolating) method of mounting the drive in the host equipment.  
Increased radiated emissions may result if you do not provide the maximum surface area ground connection between  
system ground and drive ground. This is the system designer’s and integrator’s responsibility.  
CHEETAH 15K.7 FC PRODUCT MANUAL, REV. E  
38  
                         
11.0 INTERFACE REQUIREMENTS  
This section partially describes the interface requirements as implemented on Cheetah 15K.7 FC drives. Additional  
information is provided in the Fibre Channel Interface Manual (part number 100293070).  
11.1 FC-AL FEATURES  
This section lists the Fibre Channel-specific features supported by Cheetah 15K.7 FC drives.  
11.1.1 Fibre Channel link service frames  
Table 6 lists the link services supported by Cheetah 15K.7 FC drives.  
Table 6 Link services supported  
TYPE OF FRAME  
LINK SERVICE  
Basic link service frames  
Basic link service reply frames  
Abort Sequence (ABTS)  
Basic_Accept (BA_ACC)  
Basic_Reject (BA_RJT)  
Extended link service frames  
N_Port Login (PLOGI)  
Fabric Login (FLOGI)  
Logout (LOGO)  
Process Login (PRLI)  
Process Logout (PRLO)  
Read Link Status (RLS)  
Fabric Address Notification (FAN)  
Port Discovery (PDISC)  
Address Discovery (ADISC)  
Third-party Process Logout (TRPLO)  
Extended link service reply frames  
Fibre Channel Services  
Accept (ACC)  
Link Service Reject (LS_RJT)  
Register FC-4 Types (RFT_ID)  
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11.1.2 Fibre Channel task management functions  
Table 7 lists the Fibre Channel SCSI Fibre Channel Protocol (FC SCSI FCP) task management functions supported.  
Table 7 Fibre Channel SCSI FCP task management functions  
TASK NAME  
Terminate task  
Clear ACA  
SUPPORTED  
No  
Yes  
Yes  
Yes  
Yes  
Target reset  
Clear task set  
Abort task set  
11.1.3 Fibre Channel task management responses  
Table 8 lists the FC SCSI FCP response codes returned for task management functions supported.  
Table 8 FC SCSI FCP response codes  
FUNCTION NAME  
Function complete  
Function not supported  
Function reject  
RESPONSE CODE  
00  
04  
05  
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11.1.4 Fibre Channel port login  
Table 9 identifies the required content of the N_Port Login (PLOGI) payload from an initiator.  
Table 9 N_Port login (PLOGI) payload  
BYTES  
0-15  
03  
00  
00  
00  
09  
09  
BB  
PN  
BB  
PN  
CF  
PN  
XX  
PN  
FS  
PN  
FS  
PN  
XX  
NN  
XX  
NN  
XX  
NN  
XX  
NN  
Common  
16-31  
32-35  
36-47  
48-51  
52-63  
64-67  
68-79  
80-83  
84-95  
96-99  
100-111  
112-115  
XX  
NN  
XX  
NN  
XX  
NN  
XX  
NN  
PN  
PN  
XX  
XX  
SO  
XX  
XX  
XX  
XX  
SO  
XX  
XX  
XX  
XX  
IC  
XX  
XX  
IC  
XX  
XX  
XX  
XX  
XX  
XX  
XX  
XX  
XX  
XX  
XX  
XX  
FS  
XX  
XX  
XX  
XX  
FS  
XX  
XX  
XX  
XX  
XX  
XX  
XX  
XX  
XX  
CS  
XX  
XX  
XX  
XX  
XX  
XX  
XX  
XX  
XX  
XX  
XX  
XX  
Class 1  
Class 2  
Class 3  
Reserved  
XX  
XX  
OS  
XX  
XX  
XX  
XX  
OS  
XX  
XX  
XX  
XX  
XX  
XX  
XX  
XX  
XX  
XX  
XX  
XX  
XX  
XX  
XX  
XX  
Vendor  
Version  
X
Indicates a four-bit (hex) field is not checked.  
Indicates a single bit is not checked.  
x
BB  
CF  
BB-Credit. This field is not checked. The FC-AL drive uses BB-Credit of zero (0).  
Common features. This binary field selects the common features requested by the initiator login.  
MSB  
Continuously increasing offset  
Random relative offset  
Valid version level  
Must = 1  
Not checked. Port Login Accept will return a 0—not supported.  
x
N_Port/F_Port  
Must = 0, N_Port  
Must = 1  
Alternate credit model  
Other bits reserved  
xxx XX  
FS  
PN  
Receive buffer field size. The FS field in the common and Class 3 parameters is checked for the range 128 < FS <  
2,112 and a multiple of four bytes. For multiple frame sequences, all frames but the last frame of the sequence  
must be this size. Only the receive buffer field size in the Class 3 parameters is used.  
Port name (initiator’s)—saved with the login parameters. If a change of the port name/AL_PA address association  
is detected during a Port DISCovery, and implicit logout occurs and the initiator returns a LS_RJT.  
NN  
SO  
Node name. The node name is not checked or saved by the drive.  
Service options Class 3 only.  
MSB  
Class valid  
Must = 1  
Intermix  
x
Stacked connection req.  
Sequential delivery  
Other bits reserved  
xx  
x
xxx XX  
IC  
Initiator control  
MSB XID reassign  
xx  
Proc Assc  
10 or 11 causes the login to be rejected. Other values are  
accepted.  
Other bits  
XXX  
CS  
OS  
Concurrent sequences  
Must be a value greater than 0.  
Must be a value greater than 0.  
Open sequences per exchange  
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11.1.5 Fibre Channel port login accept  
Table 10 identifies the N_Port Login access payload values.  
Table 10 N_Port Login Accept (ACC) payload  
BYTES  
0-15  
02  
00  
CC  
00  
00  
UI  
00  
01  
UI  
00  
F4  
UI  
09  
2P  
09  
00  
00  
00  
88  
00  
UI  
FS  
UI  
FS  
UI  
00  
20  
FF  
00  
00  
01  
Common  
16-31  
32-35  
36-47  
48-51  
52-63  
64-67  
68-79  
80-83  
84-95  
96-99  
100-111  
112-115  
CC  
CC  
CC  
CC  
CC  
00  
00  
80  
00  
00  
00  
00  
00  
00  
00  
00  
00  
00  
00  
00  
00  
00  
00  
00  
00  
00  
00  
00  
00  
00  
00  
00  
00  
00  
00  
00  
00  
FS  
00  
00  
00  
00  
FS  
00  
00  
00  
00  
00  
00  
00  
00  
00  
FF  
00  
00  
00  
00  
00  
00  
00  
00  
00  
00  
00  
00  
Class 1  
Class 2  
Class 3  
Reserved  
00  
00  
00  
00  
00  
00  
00  
01  
00  
00  
00  
00  
00  
00  
00  
00  
00  
00  
00  
00  
Vendor -  
Version  
Table 3:  
CC  
FS  
Bytes (22, 23 and 24) and (30, 31 and 32) are currently factory set to 00 04 CF respectively (subject to change).  
Receive buffer field size. The drive returns and uses the receive buffer size from the N_Port Login Class 3 receive  
buffer.  
UI  
P
Unique identifier. This 24-bit field is uniquely assigned to the drive. This same UI appears in the Port Name and  
Node Name fields.  
Byte port identifier field.  
0
1
2
P_LOGI received on Node.  
P_LOGI received on Port A.  
P_LOGI received on Port B.  
11.1.6 Fibre Channel Process Login  
Table 11 lists the process login payload data.  
Table 11 Process Login (PLRI) payload  
BYTES  
0-15  
20  
00  
10  
00  
00  
00  
14  
22  
08  
00  
20  
00  
XX  
XX  
XX  
XX  
XX  
XX  
XX  
XX  
16-19  
XXIndicates fields that are not used.  
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11.1.7 Fibre Channel Process Login Accept  
Table 12 lists Cheetah 15K.7 FC process login accept payload data.  
Table 12 Process Login Accept (ACC) payload  
BYTES  
0-15  
02  
00  
10  
00  
00  
00  
14  
12  
08  
00  
21  
00  
00  
00  
00  
00  
00  
00  
00  
00  
16-31  
11.1.8 Fibre Channel fabric login  
Table 13 lists the fabric login payload from the drive.  
Table 13 Fabric Login (FLOGI) payload  
BYTES  
0-15  
04  
00  
00  
00  
00  
02  
UI  
00  
F4  
UI  
09  
2P  
09  
00  
00  
00  
08  
00  
08  
40  
00  
00  
00  
00  
00  
Common  
16-31  
32-35  
36-47  
48-51  
52-63  
64-67  
68-79  
80-83  
84-95  
96-99  
100-111  
CC CC CC UI  
UI  
00  
00  
08  
00  
00  
UI  
00  
00  
40  
00  
00  
02  
00  
00  
00  
00  
00  
CC CC  
CC UI  
00  
00  
80  
00  
00  
00  
00  
00  
00  
00  
00  
00  
00  
00  
00  
00  
00  
00  
00  
00  
00  
00  
00  
00  
00  
00  
00  
00  
00  
00  
00  
00  
00  
00  
00  
00  
00  
00  
00  
00  
00  
00  
00  
00  
00  
Class 1  
Class 2  
Class 3  
Reserved  
00  
00  
00  
00  
00  
00  
00  
00  
00  
00  
00  
00  
00  
00  
00  
00  
00  
00  
00  
Vendor -  
Version  
112-115 00  
CC  
UI  
Bytes (22, 23 and 24) and (30, 31 and 32) are currently factory set to 00 04 CF respectively (subject to change).  
Unique identifier. This 24-bit field is uniquely assigned to the drive. This same UI appears in the Port Name and  
Node Name fields.  
P
Port identifier field.  
1
2
FLOGI originated on Port A.  
FLOGI originated on Port B.  
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11.1.9 Fibre Channel fabric accept login  
Table 14 Fabric Login Accept (ACC) payload  
BYTES  
0-15  
02  
E_  
00  
00  
00  
V_  
09  
09  
BB BB CF XX FS FS R_ A_  
T0  
V_  
Common  
16-31  
32-35  
36-47  
48-51  
52-63  
64-67  
68-79  
80-83  
84-95  
96-99  
100-111  
D_ T0  
PN PN PN PN PN PN PN PN NN NN NN NN  
NN NN NN NN  
XX XX XX XX  
XX XX XX XX  
OS OS XX XX  
XX XX XX XX  
XX XX XX XX XX XX XX XX XX XX XX XX Class 1  
XX XX XX XX XX XX XX XX XX XX XX XX Class 2  
SO SO xx  
xx  
XX XX FS FS XX xx  
XX XX Class 3  
XX XX XX XX XX XX XX XX XX XX XX XX Reserved  
XX XX XX XX XX XX XX XX XX XX XX XX Vendor -  
Version  
112-115 XX XX XX XX  
X
Indicates a four-bit (hex) field is not checked.  
x
Indicates a single bit is not checked.  
BB  
CF  
BB-Credit. This field is not checked. The FC-AL drive uses BB-Credit of zero (0).  
Common features. This binary field selects the common features requested by the fabric login.  
MSB  
Continuously increasing offset  
Random relative offset  
Valid version level  
x
x
x
N_Port/F_Port  
Must = 1, F_Port  
Must = 1  
Alternate credit model  
Other bits reserved  
xxx XX  
FS  
PN  
Receive buffer field size. The FS field in the common and Class 3 parameters is checked for the range 128 < FS <  
2,112 and a multiple of four bytes. The receive buffer field size in the Class 3 parameters is used. The drive uses  
the lower FS of Fabric Login Accept or N_Port Login when sending frames to an initiator.  
Port Name. The fabric port name is saved with the login parameters. If a change of the port name is detected dur-  
ing a FAN, an implicit logout occurs and a LS_RJT is returned to the fabric.  
NN  
SO  
Node Name. The drive does not check or save the node name.  
Service Options—Class 3 only.  
MSB  
Class valid  
Must = 1  
x
Intermix  
Stacked connection req.  
Sequential delivery  
Other bits reserved  
xx  
Must = 1  
xxx XX  
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11.1.10 Fibre Channel Arbitrated Loop options  
Table 15 lists the FC-AL options supported by Cheetah 15K.7 FC drives.  
Table 15 FC-AL options supported  
OPTION  
SUPPORTED  
OPEN Half Duplex  
OPEN Full Duplex  
Private Loop  
Accepted from another device.  
Sent to open another device. Accepted from another device.  
Yes  
Yes  
No  
Public Loop  
Old Port State  
Loop Position  
Loop Position Report  
Yes  
Yes  
11.2 DUAL PORT SUPPORT  
Cheetah 15K.7 FC drives have two independent FC-AL ports. These ports may be connected on independent loops or on  
the same loop. Port A and Port B may be connected in any order or combination.  
• If both ports are connected on independent loops and hard addressing is used, the drive interface address is selected  
through the interface connector, both ports will seek the same loop address. If no conflict, both ports will have the same  
loop address.  
• If both ports are connected in the same loop and hard addressing is used, at least one port will attempt taking a soft  
address to prevent an address conflict.  
Note. When a Cheetah 15K.7 FC drive is connected in loops with previous Seagate FC drive products:  
Barracuda 4LP FC (ST32171FC, ST34371FC, and ST34571FC)  
Barracuda 9FC (ST19171FC)  
Cheetah 4LP FC (ST34501FC)  
Cheetah 9FC (ST19101FC)  
the connection of Port A and B for these products must follow the requirements in their product manuals.  
Subject to buffer availability, the Cheetah 15K.7 FC drives support:  
• Concurrent port transfers—The drive supports receiving transfers on both ports at the same time when the ports are on  
independent loops.  
• Full duplex—The drive supports sending FCP_Data, FCP_RSP, FCP_XFR_RDY and ELS transfers while receiving frames  
on both ports.  
CHEETAH 15K.7 FC PRODUCT MANUAL, REV. E  
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11.3 SCSI COMMANDS SUPPORTED  
Table 16 lists the SCSI commands supported by Cheetah 15K.7 FC drives.  
Table 16 Supported commands  
Executable state of standard SCSI commands in the presence of  
LBA banding (applies to SED models only)  
Affected LBA  
User Data Unlocked  
Affected LBA  
Locked  
Command Supported  
Affectsentire Accessed ReadLock=Write ReadLock=Write  
code  
00h  
01h  
03h  
(Y/N) [4]  
Command name  
Test unit ready  
Rezero unit  
Drive (Y/N)  
(Y/N)  
Lock=False  
Executable  
Executable  
Executable  
Lock=True  
Executable  
Executable  
Executable  
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
N
N
Request sense  
Extended sense  
Field pointer bytes  
Actual retry count bytes  
Format unit [1]  
Reassign blocks  
Read  
N
04h  
07h  
08h  
0Ah  
0Bh  
12h  
Y
N
N
N
N
Y
Y
Y
Y
Y
N
N
Executable  
Executable  
Executable  
Executable  
Executable  
Executable  
Check Condition  
Check Condition  
Check Condition  
Check Condition  
Executable  
Write  
Seek  
Inquiry  
Executable  
Vital product data page (00h)  
Unit serial number page (80h)  
Implemented operating def. page  
(81h)  
Y
Y
Y
Y
Y
Y
Device Identification page (83h)  
Firmware numbers page (C0h)  
Date code page (C1h)  
Jumper settings page (C2h)  
Device Behavior page (C3h)  
15h  
16h  
Mode select (same pages as Mode  
Sense command shown below) [3]  
Y
Y
N
N
Executable  
Executable  
Executable  
Executable  
Y
N
N
Y
N
Y
Y
Y
Y
Reserve  
3rd party reserved  
Extent reservation  
Release  
17h  
18h  
1Ah  
Y
Y
N
N
Executable  
Executable  
Executable  
Executable  
Copy  
Mode sense  
Unit attention page (00h)  
Error recovery page (01h)  
Disconnect/reconnect control (page  
02h)  
Y
Y
Format page (03h)  
Rigid disk drive geometry page  
(04h)  
Y
Y
Y
Y
Verify error recovery page (07h)  
Caching parameters page (08h)  
Control mode page (0Ah)  
Fibre Channel Interface Control  
page (19h)  
Y
Power control page (1Ah)  
CHEETAH 15K.7 FC PRODUCT MANUAL, REV. E  
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Table 16 Supported commands (continued)  
Executable state of standard SCSI commands in the presence of  
LBA banding (applies to SED models only)  
Affected LBA  
User Data Unlocked  
Affected LBA  
Locked  
Command Supported  
Affectsentire Accessed ReadLock=Write ReadLock=Write  
code  
(Y/N) [4]  
Command name  
Drive (Y/N)  
(Y/N)  
Lock=False  
Lock=True  
Y
Information exceptions control page  
(1Ch)  
Y
Background Scan mode subpage  
(01h)  
1Bh  
1Ch  
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
N
Y
Y
Y
N
Y
Y
Y
Y
N
Y
Y
Y
Y
N
N
N
N
N
N
Y
N
Y
N
N
Y
Start unit/stop unit  
Receive diagnostic results  
Supported diagnostics pages  
Translate page  
Y
Y
Y
N
Executable  
Executable  
Executable  
Executable  
Enclosure services page  
Send diagnostics page  
Supported diagnostics pages  
Translate page  
1Dh  
Y
Y
N
N
Executable  
Executable  
Executable  
Executable  
25h  
28h  
Read capacity  
Read extended  
Disable page out  
Force unit access  
Relative address  
Write extended  
2Ah  
Disable page out  
Force unit access  
Relative address  
Seek extended  
2Bh  
2Eh  
Write and verify  
N
Y
Executable  
Check Condition  
Disable page out  
Byte check  
Relative address  
Verify (10) (BYTCHK = 0)  
Verify (10) (BYTCHK = 1)  
Disable page out  
Byte check  
2Fh  
N
N
Y
Y
Executable  
Executable  
Executable  
Check Condition  
Relative address  
Search data high  
Search data equal  
Search data low  
Set limits  
30h  
31h  
32h  
33h  
34h  
35h  
36h  
37h  
39h  
3Ah  
3Bh  
Prefetch  
N
N
Y
Y
Executable  
Executable  
Check Condition  
Executable  
Synchronize cache  
Lock-unlock-cache  
Read defect data  
Compare  
Y
N
Executable  
Executable  
Copy and verify  
Write buffer  
N
Y
Check Condition  
Check Condition  
Executable  
(all modes except modes 4h - 7h, 0Eh, and 0Fh)  
Executable  
(modes 4h - 7h, 0Eh, and 0Fh)  
Y
N
CHEETAH 15K.7 FC PRODUCT MANUAL, REV. E  
47  
                                                       
Table 16 Supported commands (continued)  
Executable state of standard SCSI commands in the presence of  
LBA banding (applies to SED models only)  
Affected LBA  
User Data Unlocked  
Affected LBA  
Locked  
Command Supported  
Affectsentire Accessed ReadLock=Write ReadLock=Write  
code  
(Y/N) [4]  
Command name  
Drive (Y/N)  
(Y/N)  
Lock=False  
Lock=True  
Y
Write combined header and data  
mode (0)  
Y
N
Y
Write data mode (2)  
Download microcode mode (4)  
Download microcode and save  
modes (5)  
N
Y
Download microcode with offsets  
mode (6)  
Download microcode with offsets  
and save mode (7)  
Y
Y
Firmware download option [2]  
3Ch  
3Ch  
Read buffer (Mode 1Ch -- Error  
Retrieval Mode)  
Y
Y
N
N
Executable  
Executable  
Y
Y
Read buffer  
Check Condition  
Check Condition  
Read combined header and data  
mode (0)  
Y
Y
Y
Y
Read data mode (2)  
Read descriptor mode (3)  
Read long  
3Eh  
3Fh  
N
N
N
Y
N
Y
Y
Y
N
Y
Check Condition  
Check Condition  
Executable  
Check Condition  
Check Condition  
Check Condition  
Check Condtion  
Check Condition  
Write long (10) (WR_UNCOR = 0)  
Write long (10) (WR_UNCOR = 1)  
Change definition  
Write same (10)  
40h  
41h  
N
Y
N
N
N
Y
Y
Y
Y
Y
N
Executable  
Executable  
PBdata  
LBdata  
42-4Bh  
4Ch  
Not used  
Log Select  
Y
Y
N
N
Executable  
Executable  
Executable  
Executable  
4Dh  
Log Sense  
Support Log page (00h)  
Write Error Counter page (02h)  
Read Error Counter page (03h)  
Read Reverse Error Counter page  
(04h)  
Y
Y
Verify Error Counter page (05h)  
Non-medium Error Counter page  
(06h)  
Y
N
Y
Y
Temperature page (0Dh)  
Application Client page (0Fh)  
Self Test Results page (10h)  
Background Medium Scan page  
(15h)  
Y
Cache Statistics Counter page  
(37h)  
Y
N
N
N
N
Factory Log page (3Eh)  
Not used  
4E-4Fh  
50h  
XD write  
51h  
XP write  
52h  
XD read  
CHEETAH 15K.7 FC PRODUCT MANUAL, REV. E  
48  
                                           
Table 16 Supported commands (continued)  
Executable state of standard SCSI commands in the presence of  
LBA banding (applies to SED models only)  
Affected LBA  
User Data Unlocked  
Affected LBA  
Locked  
Command Supported  
Affectsentire Accessed ReadLock=Write ReadLock=Write  
code  
53-54h  
55h  
(Y/N) [4]  
Command name  
Not used  
Drive (Y/N)  
(Y/N)  
Lock=False  
Lock=True  
N
Y
Mode Select (10) [3]  
Reserved (10)  
56h  
Y
Y
3rd party reserve  
Extent reservation  
Released (10)  
N
57h  
Y
58-59h  
5Ah  
N
Not used  
Y
Mode Sense (10) [3]  
Not used  
5B-5Dh  
5E  
N
A
Persistent reserve in  
Persistent reserve out  
Not used  
Y
Y
N
N
Executable  
Executable  
Executable  
Executable  
5F  
A
60-7Eh  
7Fh  
N
Y (PI only)  
Write Same (32)  
Verify (32) (BYTCHK = 0)  
Verify (32) (BYTCHK = 1)  
XD write extended  
Rebuild  
N
N
N
Y
Y
Y
Executable  
Executable  
Executable  
Check Condition  
Executable  
7Fh  
Y (PI only)  
7Fh  
Y (PI only)  
Check Condition  
80h  
N
81h  
N
82h  
N
Regenerate  
83-8Eh  
8Fh  
N
Not used  
Y (PI only)  
Y (PI only)  
Y (PI only)  
Y
Verify (16) (BYTCHK = 0)  
Verify (16) (BYTCHK = 1)  
Write same (16)  
Report LUNS  
N
N
N
Y
Y
Y
Y
Y
N
N
Executable  
Executable  
Executable  
Executable  
Executable  
Executable  
8Fh  
Check Condition  
Check Condition  
Executable  
93h  
A0h  
A2h  
Y
Security Protocol In  
Executable  
(SED only)  
A3h  
B5h  
Y
Report Device Identifier  
Security Protocol Out  
Y
Y
N
N
Executable  
Executable  
Executable  
Executable  
(SED only)  
Y
(SED only)  
C0-DFh  
EO-FFh  
N
N
Not used  
Not used  
[1] Cheetah 15K.7 FC drives can format to 512, 520, 524 or 528 bytes per logical block.  
[2] Warning. Power loss during flash programming can result in firmware corruption. This usually makes the drive inopera-  
ble.  
[3] Reference Mode Sense command 1Ah for mode pages supported.  
[4] Y = Yes. Command is supported.  
N = No. Command is not supported.  
A = Support is available on special request.  
CHEETAH 15K.7 FC PRODUCT MANUAL, REV. E  
49  
                     
11.3.1 Inquiry data  
Table 17 lists the Inquiry command data that the drive should return to the initiator per the format given in the Fibre Channel  
Interface Manual.  
Table 17 Cheetah 15K.7 FC inquiry data  
BYTES  
DATA (HEX)  
0-15  
00  
[53  
R#  
00  
00  
00  
00  
00  
54  
R#  
00  
00  
00  
43  
xx**  
33  
12  
36  
R#  
00  
00  
00  
70  
20  
68  
8B  
30  
S#  
00  
00  
00  
79  
53  
74  
00  
30  
S#  
00  
00  
00  
72  
65  
73  
PP  
30  
S#  
00  
00  
00  
69  
61  
20  
02  
35  
S#  
00  
00  
00  
67  
67  
72  
53  
37  
S#  
00  
00  
00  
68  
61  
65  
45  
46  
S#  
00  
00  
00  
74  
74  
73  
41  
43]  
S#  
00  
00  
00  
20  
65  
65  
47  
20  
S#  
00  
00  
00  
28  
20  
72  
41  
20  
00  
00  
00  
00  
63  
41  
76  
54  
20  
00  
00  
00  
00  
29  
6C  
65  
45  
20  
00  
00  
00  
00  
20  
6C  
64  
20  
20  
00  
00  
00  
00  
Vendor ID  
Product ID  
1
16-31  
32-47  
48-63  
64-79  
80-95  
96-111  
112-127  
128-143  
R#  
00  
00  
00  
6F  
32* *Copyright  
30* 30* 39*  
72 69 67  
20  
20  
notice  
*
Copyright year (changes with actual year).  
**  
SCSI Revision support. Refer to the SPC release documentation for definitions.  
PP 50 = Inquiry data for an Inquiry command received on Port A.  
70 = Inquiry data for an Inquiry command received on Port B.  
R# Four ASCII digits representing the last four digits of the product firmware release number.  
S# Eight ASCII digits representing the eight digits of the product serial number.  
[ ]  
Bytes 18 through 26 reflect model of drive in hex format.  
11.3.2 Mode Sense data  
The Mode Sense command provides a way for the drive to report its operating parameters to the initiator. The drive  
maintains four sets of mode parameters:  
1. Default values  
Default values are hard-coded in the drive firmware stored in flash E-PROM (nonvolatile memory) on the drive’s PCB.  
These default values can be changed only by downloading a complete set of new firmware into the flash E-PROM. An  
initiator can request and receive from the drive a list of default values and use those in a Mode Select command to set up  
new current and saved values, where the values are changeable.  
2. Saved values  
Saved values are stored on the drive’s media using a Mode Select command. Only parameter values that are allowed to  
be changed can be changed by this method. Parameters in the saved values list that are not changeable by the Mode  
Select command get their values from default values storage.  
When power is applied to the drive, it takes saved values from the media and stores them as current values in volatile  
memory. It is not possible to change the current values (or the saved values) with a Mode Select command before the  
drive achieves operating speed and is “ready.” An attempt to do so results in a “Check Condition” status.  
On drives requiring unique saved values, the required unique saved values are stored into the saved values storage  
location on the media prior to shipping the drive. Some drives may have unique firmware with unique default values also.  
On standard OEM drives, the saved values are taken from the default values list and stored into the saved values stor-  
age location on the media prior to shipping.  
3. Current values  
Current values are volatile values being used by the drive to control its operation. A Mode Select command can be used  
to change the values identified as changeable values. Originally, current values are installed from saved or default val-  
ues after a power on reset, hard reset, or Bus Device Reset message.  
CHEETAH 15K.7 FC PRODUCT MANUAL, REV. E  
50  
       
4. Changeable values  
Changeable values form a bit mask, stored in nonvolatile memory, that dictates which of the current values and saved  
values can be changed by a Mode Select command. A one (1) indicates the value can be changed. A zero (0) indicates  
the value is not changeable. For example, in Table 18, refer to Mode page 81, in the row entitled “CHG.” These are hex  
numbers representing the changeable values for Mode page 81. Note in columns 5 and 6 (bytes 04 and 05), there is 00h  
which indicates that in bytes 04 and 05 none of the bits are changeable. Note also that bytes 06, 07, 09, 10, and 11 are  
not changeable, because those fields are all zeros. In byte 02, hex value FF equates to the binary pattern 11111111. If  
there is a zero in any bit position in the field, it means that bit is not changeable. Since all of the bits in byte 02 are ones,  
all of these bits are changeable.  
The changeable values list can only be changed by downloading new firmware into the flash E-PROM.  
Note. Because there are often several different versions of drive control firmware in the total population of drives in the  
field, the Mode Sense values given in the following tables may not exactly match those of some drives.  
The following tables list the values of the data bytes returned by the drive in response to the Mode Sense command pages  
for SCSI implementation (see the Fibre Channel Interface Manual).  
Definitions:  
SAV = Current saved value.  
DEF = Default value. Standard OEM drives are shipped configured this way.  
CHG = Changeable bits; indicates if default value is changeable.  
CHEETAH 15K.7 FC PRODUCT MANUAL, REV. E  
51  
Table 18 Mode Sense data saved, default and changeable values for ST3600057FC drives  
MODE DATA HEADER:  
00 be 00 10 00 00 00 08  
MODE PAGES:  
DEF 81 0a c0 0b ff 00 00 00 05 00 ff ff  
CHG 81 0a ff ff 00 00 00 00 ff 00 ff ff  
DEF 82 0e 80 80 00 00 00 00 00 00 01 3a 00 00 00 00  
CHG 82 0e ff ff 00 00 00 00 00 00 ff ff 00 00 00 00  
DEF 83 16 bb d0 00 00 00 00 03 80 04 c4 02 00 00 01 00 c0 00 4c 40 00 00 00  
CHG 83 16 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  
DEF 84 16 01 8a 9a 08 00 00 00 00 00 00 00 00 00 00 00 00 00 00 3a a7 00 00  
CHG 84 16 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  
DEF 87 0a 00 0b ff 00 00 00 00 00 ff ff  
CHG 87 0a 0f ff 00 00 00 00 00 00 ff ff  
DEF 88 12 14 00 ff ff 00 00 ff ff ff ff 80 20 00 00 00 00 00 00  
CHG 88 12 a5 00 00 00 ff ff ff ff 00 00 20 00 00 00 00 00 00 00  
DEF 8a 0a 02 00 00 00 00 00 00 00 19 00  
CHG 8a 0a 03 f0 00 00 00 00 00 00 00 00  
DEF 99 06 00 00 00 00 00 00  
CHG 99 06 00 ff 00 00 00 00  
DEF 9a 0a 00 02 00 00 00 05 00 00 8c a0  
CHG 9a 0a 00 03 ff ff ff ff 00 00 00 00  
DEF 9c 0a 10 00 00 00 00 00 00 00 00 01  
CHG 9c 0a 9d 0f ff ff ff ff ff ff ff ff  
DEF dc 01 00 0c 01 01 00 18 00 18 00 00 00 00 00 00  
CHG dc 01 00 0c 00 01 ff ff ff ff 00 00 00 00 00 00  
DEF 80 06 00 80 0f 00 00 00  
CHG 80 06 b7 c0 8f 00 00 00  
READ CAPACITY DATA:  
READ BUFFER  
0 1 2 3 4 5 6 7 8 9 A B C D E F  
ASCII  
000000: 45 DD 2F AF 00 00 02 00 __ __ __ __ __ __ __ __ E./....  
CHEETAH 15K.7 FC PRODUCT MANUAL, REV. E  
52  
   
Table 19 Mode Sense data default and changeable values for ST3450857FC drives  
MODE DATA HEADER:  
00 be 00 10 00 00 00 08  
BLOCK DESCRIPTOR:  
34 65 f8 70 00 00 02 00  
MODE PAGES:  
DEF 81 0a c0 0b ff 00 00 00 05 00 ff ff  
CHG 81 0a ff ff 00 00 00 00 ff 00 ff ff  
DEF 82 0e 80 80 00 00 00 00 00 00 01 3a 00 00 00 00  
CHG 82 0e ff ff 00 00 00 00 00 00 ff ff 00 00 00 00  
DEF 83 16 bb d0 00 00 00 00 03 80 04 c4 02 00 00 01 00 c0 00 4c 40 00 00 00  
CHG 83 16 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  
DEF 84 16 01 8a 9a 06 00 00 00 00 00 00 00 00 00 00 00 00 00 00 3a a7 00 00  
CHG 84 16 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  
DEF 87 0a 00 0b ff 00 00 00 00 00 ff ff  
CHG 87 0a 0f ff 00 00 00 00 00 00 ff ff  
DEF 88 12 14 00 ff ff 00 00 ff ff ff ff 80 20 00 00 00 00 00 00  
CHG 88 12 a5 00 00 00 ff ff ff ff 00 00 20 00 00 00 00 00 00 00  
DEF 8a 0a 02 00 00 00 00 00 00 00 12 c0  
CHG 8a 0a 03 f0 00 00 00 00 00 00 00 00  
DEF 99 06 00 00 00 00 00 00  
CHG 99 06 00 ff 00 00 00 00  
DEF 9a 0a 00 02 00 00 00 05 00 00 8c a0  
CHG 9a 0a 00 03 ff ff ff ff 00 00 00 00  
DEF 9c 0a 10 00 00 00 00 00 00 00 00 01  
CHG 9c 0a 9d 0f ff ff ff ff ff ff ff ff  
DEF dc 01 00 0c 01 01 00 18 00 18 00 00 00 00 00 00  
CHG dc 01 00 0c 00 01 ff ff ff ff 00 00 00 00 00 00  
DEF 80 06 00 80 0f 00 00 00  
CHG 80 06 b7 c0 8f 00 00 00  
READ CAPACITY DATA:  
READ BUFFER  
0 1 2 3 4 5 6 7 8 9 A B C D E F  
ASCII  
000000: 34 65 F8 6F 00 00 02 00 __ __ __ __ __ __ __ __  
CHEETAH 15K.7 FC PRODUCT MANUAL, REV. E  
53  
Table 20 Mode Sense data default and changeable values for ST3300657FC drives  
MODE DATA HEADER:  
00 be 00 10 00 00 00 08  
BLOCK DESCRIPTOR:  
22 ec b2 5c 00 00 02 00  
MODE PAGES:  
DEF 81 0a c0 0b ff 00 00 00 05 00 ff ff  
CHG 81 0a ff ff 00 00 00 00 ff 00 ff ff  
DEF 82 0e 80 80 00 00 00 00 00 00 01 3a 00 00 00 00  
CHG 82 0e ff ff 00 00 00 00 00 00 ff ff 00 00 00 00  
DEF 83 16 bb d0 00 00 00 00 03 80 04 c4 02 00 00 01 00 c0 00 4c 40 00 00 00  
CHG 83 16 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  
DEF 84 16 01 8a 9a 04 00 00 00 00 00 00 00 00 00 00 00 00 00 00 3a a7 00 00  
CHG 84 16 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  
DEF 87 0a 00 0b ff 00 00 00 00 00 ff ff  
CHG 87 0a 0f ff 00 00 00 00 00 00 ff ff  
DEF 88 12 14 00 ff ff 00 00 ff ff ff ff 80 20 00 00 00 00 00 00  
CHG 88 12 a5 00 00 00 ff ff ff ff 00 00 20 00 00 00 00 00 00 00  
DEF 8a 0a 02 00 00 00 00 00 00 00 0c 80  
CHG 8a 0a 03 f0 00 00 00 00 00 00 00 00  
DEF 99 06 00 00 00 00 00 00  
CHG 99 06 00 ff 00 00 00 00  
DEF 9a 0a 00 02 00 00 00 05 00 00 8c a0  
CHG 9a 0a 00 03 ff ff ff ff 00 00 00 00  
DEF 9c 0a 10 00 00 00 00 00 00 00 00 01  
CHG 9c 0a 9d 0f ff ff ff ff ff ff ff ff  
DEF dc 01 00 0c 01 01 00 18 00 18 00 00 00 00 00 00  
CHG dc 01 00 0c 00 01 ff ff ff ff 00 00 00 00 00 00  
DEF 80 06 00 80 0f 00 00 00  
CHG 80 06 b7 c0 8f 00 00 00  
READ CAPACITY DATA:  
READ BUFFER  
0 1 2 3 4 5 6 7 8 9 A B C D E F  
ASCII  
000000: 22 EC B2 5B 00 00 02 00 __ __ __ __ __ __ __ __  
CHEETAH 15K.7 FC PRODUCT MANUAL, REV. E  
54  
11.4 MISCELLANEOUS OPERATING FEATURES AND CONDITIONS  
Table 21 lists various features and conditions. A “Y” in the support column indicates the feature or condition is supported. An  
“N” in the support column indicates the feature or condition is not supported.  
Table 21 Miscellaneous features  
SUPPORTED  
FEATURE OR CONDITION  
Y
N
N
N
Y
N
Y
Y
Y
Y
N
Y
FC-AL selective reset (LIP Reset)  
Automatic contingent allegiance  
Asynchronous event notification  
Synchronized (locked) spindle operation  
Segmented caching  
Zero latency read  
Queue tagging (up to 128 queue tags supported)  
Deferred error handling  
Parameter rounding (controlled by Round bit in Mode Select page 0)  
Reporting actual retry count in Extended Sense bytes 15, 16, and 17  
Adaptive caching  
SMP = 1 in Mode Select command needed to save RPL and rotational offset bytes  
Table 22 Miscellaneous status  
SUPPORTED  
STATUS  
Y
Y
Y
Y
Y
Y
Y
Y
N
N
Good  
Check condition  
Condition met/good  
Busy  
Intermediate/good  
Intermediate/condition met/good  
Reservation conflict  
Task set full  
ACA active  
ACA active, faulted initiator  
CHEETAH 15K.7 FC PRODUCT MANUAL, REV. E  
55  
                                             
11.5 FC-AL PHYSICAL INTERFACE  
Figure 12 shows the location of the J1 Fibre Channel single connection attachment (FC-SCA). Figure 14 provides the  
dimensions of the FC-SCA connector.  
Details of the physical, electrical, and logical characteristics are provided within this section. The operational aspects of  
Seagate’s Fibre Channel drives are provided in the Fibre Channel Interface Manual..  
J1 interface connector  
Figure 12. Physical interface  
11.5.1 Physical characteristics  
This section defines physical interface connector.  
11.5.1.1 Physical description  
FIbre Channel drives may be connected in a loop together or with other compatible FC-AL devices. A maximum of 127  
devices may have addresses; however, one of the addresses is reserved for a fabric port switch device. This means 126  
addresses are available for FC-AL devices. More FC-AL compatible devices may physically reside on the loop, but they will  
not be functional because they would not be able to obtain valid addresses.  
Port bypass circuits (PBCs) allow devices to be inserted into unpopulated locations or removed from the loop with loop  
operation recovery after a brief interruption. These PBCs are located external to the FC-AL device. Figure 13 shows the  
relationship between the PBC and FC-AL device.  
Port Bypass  
Circuit  
From Previous  
Drive  
To Next  
Drive  
Port Bypass  
Circuit N 1  
Port Bypass  
Circuit N 1  
MUX  
Select  
Serial  
In  
Serial  
Out  
Drive N 1  
Drive N 1  
Drive N  
Figure 13. Port bypass circuit physical interconnect  
CHEETAH 15K.7 FC PRODUCT MANUAL, REV. E  
56  
                       
11.5.2 Connector requirements  
Table 23 Recommended mating SCA part numbers  
PART DESCRIPTION  
POSITIONS  
PART NUMBER  
787317-1  
FEATURES  
With polarization  
With polarization  
With polarization  
With polarization  
AMP Vertical (SCA sequence)  
40  
40  
40  
40  
Berg  
71781  
Methode  
Molex  
512-220-91-101N  
717431040  
1.618 .003 in  
(41.1 0.08 mm)  
Pin 20  
Pin 1  
0.197 .003 in  
(5.00 .08 mm)  
2 places  
Pin 40  
.64 in  
Pin 21  
(16.24 mm)  
1.28 in  
(32.47 mm)  
0.394 .004 in  
(10.0 0.10 mm)  
1.618 .003 in  
(41.10 0.08 mm)  
0.226 in  
(6.50 mm)  
0.039 in  
min.  
min.  
(0.75 mm)  
0.264 .007 in  
.010 in  
1.492 .009 in  
(37.90 0.24 mm)  
0.024 in  
(0.60 mm)  
min.  
(6.71 0.18 mm)  
( 0.25 mm)  
Mating end  
Housing  
0.079 .010 in  
(2.00 .25 mm)  
(initial point  
of contact)  
.05 in  
(1.27 mm)  
Contact (typ.)  
.025 in (0.635 mm)  
typ.  
0.060 .010 in  
(1.52 0.25 mm)  
0.106 .010 in  
(2.70 0.25 mm)  
0.051 .006 in  
(1.30 0.16 mm)  
2 places  
Figure 14. FC-AL SCA device connector dimensions  
11.5.3 Electrical description  
Fibre Channel drives use the FC-SCA connector for:  
• DC power  
• FC-AL interface  
• Drive select (device identification)  
• Option selection  
• Enclosure Services interface  
This 40-pin connector is designed to plug directly into a backpanel. External cables are not required.  
CHEETAH 15K.7 FC PRODUCT MANUAL, REV. E  
57  
                           
11.5.4 Pin descriptions  
This section provides a pin-out of the FC-SCA and a description of the functions provided by the pins.  
Table 24 FC-SCA pin descriptions  
PI  
N
SIGNAL NAME  
SIGNAL TYPE  
PIN  
SIGNAL NAME  
SIGNAL TYPE  
1*  
-EN bypass port A  
Low Voltage TTL out-  
put  
21  
12 Volts charge  
2*  
3*  
4*  
5*  
6*  
7*  
8*  
9*  
12 Volts  
22  
Ground  
12 Volts  
23  
Ground  
12 Volts  
24*  
25*  
26  
+Port A_in  
-Port A_in  
Ground  
FC Diff. input pair  
FC Diff. input pair  
FC Diff. output pair  
-Parallel ESI  
[1]  
Ground  
Active LED out  
Reserved  
Open collector out  
27*  
28*  
29  
+Port B_in  
-Port B_in  
Ground  
[2]  
Start_1  
TTL input  
TTL input  
[2]  
10  
*
Start_2  
30*  
+Port A_out  
11  
*
-EN bypass port B  
SEL_6  
Low Voltage TTL out-  
put  
31*  
32  
-Port A_out  
Ground  
12  
*
TTL input/output  
TTL input/output  
TTL input  
13  
*
SEL_5  
33*  
34*  
35  
+Port B_out  
-Port B_out  
Ground  
FC Diff. output pair  
14  
*
SEL_4  
15  
*
SEL_3  
TTL input/output  
Open collector out  
TTL input  
16  
*
Fault LED out  
36  
SEL_2  
TTL input/output  
TTL input/output  
TTL input/output  
TTL input  
[
[
17  
*
DEV_CTRL_CODE_2  
37  
SEL_1  
2]  
18  
*
DEV_CTRL_CODE_1  
TTL input  
38  
SEL_0  
2]  
[
19  
*
5 Volts  
5 Volts  
39  
DEV_CTRL_CODE_0  
2
20  
*
40  
5 Volts charge  
*Short pins in mating backpanel connector.  
[1] This pin may be connected to external logic to detect the presence of the drive. The drive connects this pin to the com-  
mon ground.  
[2] Pins 9, 10, 17, 18, and 39 are option select pins and are tied high by the drive circuitry. The preferred electrical connec-  
tion at the backplane is either open or grounded (open for the ‘1’ setting, grounded for the ‘0’ setting). Alternatively,  
these pins may be driven by a 3.3V logic device, pulled up to 3.3V through a pull-up resistor (recommended size of 10k  
ohm), or grounded through some other means.  
CHEETAH 15K.7 FC PRODUCT MANUAL, REV. E  
58  
   
11.5.5 FC-AL transmitters and receivers  
AC coupling to eliminate ground shift noise.  
.01  
.01  
TX  
TY  
RX  
Differential  
Transmitter  
100  
Receiver  
100  
RY  
Transfer Medium  
Figure 15. FC-AL transmitters and receivers  
11.5.6 Power  
Power is supplied through the FC-SCA with support for +5 volts and +12 volts. All of the voltage pins in the drive connector  
are the same length.  
Four 12 volt pins provide +12 volt power to the drive. The current return for the +12 volt power supply is through the common  
ground pins. The supply current and return current must be distributed as evenly as possible among the pins. The maximum  
current typically occurs while the drive motor is starting.  
Three 5 volt pins provide logic power to the drive. The current return for the +5 volt power supply is through the common  
ground pins. Distribute supply and return current as evenly as possible among the voltage and ground pins.  
The mating connector pins use shorter contacts to achieve power surge reductions and to aid in “hot plugging” the drives.  
There are longer voltage contacts in the connector to enable the drive filter capacitors to charge. Current to the drive through  
the long charge pins is limited by the system in which the drive operates. Three of the +12 volt pins are shorter to allow  
capacitive pre-charging through the longer +12 volt charge pin. Two of the +5 volt pins are shorter to allow capacitive  
precharging through the longer +5 volt charge pin.  
11.5.7 Fault LED Out  
The Fault LED Out signal is driven by the drive when:  
• the drive detects failure of both ports  
• the drive detects an internal failure  
• the drive receives the appropriate fault LED command from the host  
The Fault LED Out signal is designed to pull down the cathode of an LED. The anode is attached to the proper +5 volt supply  
through an appropriate current-limiting resistor. The LED and the current-limiting resistor are external to the drive.  
CHEETAH 15K.7 FC PRODUCT MANUAL, REV. E  
59  
                           
11.5.8 Active LED Out  
The Active LED Out signal is driven by the drive as indicated in Table 25.  
Table 25 Active LED Out conditions  
NORMAL COMMAND ACTIVITY  
Spun down and no activity  
LED STATUS  
Slow blink (20% on and 80% off a 2 sec cycle)  
Spun down and activity (command executing)  
Spun up and no activity  
On  
On  
Spun up and activity (command executing)  
Spinning up or down  
Off  
Blinks steadily (50% on and 50% off)  
Toggles on/off  
Format in progress, each cylinder change  
The Active LED Out signal is designed to pull down the cathode of an LED. The anode is attached to the proper +5 volt  
supply through an appropriate current limiting resistor. The LED and the current limiting resistor are external to the drive.  
11.5.9 Enable port bypass signals  
The – Enable Bypass Port A (– EN BYP Port A) and – Enable Bypass Port B (– EN BYP Port B) signals control the port  
bypass circuits (PBC) located external to the disk drive. The PBC allows a loop to remain functional in the event of a drive  
failure or removal. When these signals are active, low, the PBC bypasses the drive on the associated port. When an Enable  
Bypass signal is active, the corresponding Port Bypass LED signal in connector J1 is driven low by the disk drive. A pull  
down resistor, 1K, located with the PBC should be used to insure the bypass is enabled if the disk drive is not installed.  
The Enable Bypass signal is active under failing conditions within the drive, on detection of the Loop Port Bypass primitive  
sequence, or on removal of the drive. In the bypass state the drive continues to receive on the inbound fibre. Enable Bypass  
may be deactivated by detection of a Loop Port Enable primitive sequence if the drive has completed self-test and a  
hardware failure is not present.  
Failure modes detected by the disk drive that will enable bypass include:  
• Transmitter/receiver wrap test failure  
• Loss of receive clock  
• Loss of transmission clock  
• Drive interface hardware error  
CHEETAH 15K.7 FC PRODUCT MANUAL, REV. E  
60  
                   
11.5.10 Motor start controls  
The drive’s motor is started according to the Start_1 and Start_2 signals described in Table 26. The state of these signals can  
be wired into the backplane socket or driven by logic on the backplane.  
Table 26 Motor start control signals  
CASE  
START_2  
Low  
START_1  
Low  
MOTOR SPIN FUNCTION  
1
2
3
Motor spins up at DC power on.  
High  
Low  
Motor spins up only when SCSI Start command is received.  
Low  
High  
Motor spins up after a delay of 12 seconds times the modulo 8 value  
of the numeric SEL ID of the drive from DC power on.  
4
High  
High  
The drive will not spin up.  
11.5.11 SEL_6 through SEL_0 ID lines  
The SEL_6 through SEL_0 ID lines determine drive address, and, optionally, for an Enclosure Services Interface. When the  
mapping of SEL to FC-AL physical addresses (AL_PA). You can think of the SEL lines as the equivalent of a backpanel logic  
plug. The drives does not provide pull up resistors on these lines. The backpanel is required to provide high and low inputs to  
the SEL_ID lines per the specifications in table 29 on page 63.  
Note. Table 27 gives AL_PA values for each SEL value. The first entry in the table is SEL_ID 00. The last entry is  
SEL_ID 7D. SEL_ID 7E is AL_PA 00 which is not valid for an NL_Port, so is not included in the table. Also,  
SEL_ID 7Fh does map to a valid AL_PA; however, this value signals the drive that physical addresses are not  
being assigned using the SEL lines and that a “soft” address will be determined by FC-AL loop initialization.  
When the Parallel ESI line is low, the enclosure backpanel logic switches to ESI mode if supported. There are two modes of  
ESI, seven bits of enclosure status and a bidirectional mode. ESI support and the mode are determined by the drive using a  
discovery process. Refer to the Fibre Channel Interface Manual for a description of ESI operation.  
11.5.11.1Parallel Enclosure Services Interface (ESI)  
The parallel ESI line is an output from the drive. This line provides the enclosure with an indication of the present function of  
the SEL lines. A high level, the default state, indicates the drive requires address information on the SEL lines. A low level  
indicates the drive is attempting an ESI transfer. The enclosure may not support ESI on any or all drive locations. It may only  
support the address function. Support of ESI is discovered by the drive. Refer to the Fibre Channel Interface Manual for a  
description of ESI operations.  
CHEETAH 15K.7 FC PRODUCT MANUAL, REV. E  
61  
         
Table 27 AL_PA values  
AL_PA  
(hex)  
SEL ID  
(hex)  
Setting  
(dec)  
AL_PA  
(hex)  
SEL ID  
(hex)  
Setting  
(dec)  
AL_PA  
(hex)  
SEL ID  
(hex)  
Setting  
(dec)  
EF  
E8  
E4  
E2  
E1  
E0  
DC  
DA  
D9  
D6  
D5  
D4  
D3  
D2  
D1  
CE  
CD  
CC  
CB  
CA  
C9  
C7  
C6  
C5  
C3  
BC  
BA  
B9  
B6  
B5  
B4  
B3  
B2  
B1  
AE  
AD  
AC  
AB  
AA  
A9  
A7  
A6  
A5  
00  
01  
02  
03  
04  
05  
06  
07  
08  
09  
0A  
0B  
0C  
0D  
0E  
0F  
10  
11  
12  
13  
14  
15  
16  
17  
18  
19  
1A  
1B  
1C  
1D  
1E  
1F  
20  
21  
22  
23  
24  
25  
26  
27  
28  
29  
2A  
00  
01  
02  
03  
04  
05  
06  
07  
08  
09  
10  
11  
12  
13  
14  
15  
16  
17  
18  
19  
20  
21  
22  
23  
24  
25  
26  
27  
28  
29  
30  
31  
32  
33  
34  
35  
36  
37  
38  
39  
40  
41  
42  
A3  
9F  
9E  
9D  
9B  
98  
97  
90  
8F  
88  
84  
82  
81  
80  
7C  
7A  
79  
76  
75  
74  
73  
72  
71  
6E  
6D  
6C  
6B  
6A  
69  
67  
66  
65  
63  
5C  
5A  
59  
56  
55  
54  
53  
52  
51  
4E  
2B  
2C  
2D  
2E  
2F  
30  
31  
32  
33  
34  
35  
36  
37  
38  
39  
3A  
3B  
3C  
3D  
3E  
3F  
40  
41  
42  
43  
44  
45  
46  
47  
48  
49  
4A  
4B  
4C  
4D  
4E  
4F  
50  
51  
52  
53  
54  
55  
43  
44  
45  
46  
47  
48  
49  
50  
51  
52  
53  
54  
55  
56  
57  
58  
59  
60  
61  
62  
63  
64  
65  
66  
67  
68  
69  
70  
71  
72  
73  
74  
75  
76  
77  
78  
79  
80  
81  
82  
83  
84  
85  
4D  
4C  
4B  
4A  
49  
47  
46  
45  
43  
3c  
3A  
39  
36  
35  
34  
33  
32  
31  
2E  
2D  
2C  
2B  
2A  
29  
27  
26  
25  
23  
1F  
1E  
1D  
1B  
18  
17  
10  
0F  
08  
04  
02  
01  
56  
57  
58  
59  
5A  
5B  
5C  
5D  
5E  
5F  
60  
61  
62  
63  
64  
65  
66  
67  
68  
69  
6A  
6B  
6C  
6D  
6E  
6F  
70  
71  
72  
73  
74  
75  
76  
77  
78  
79  
7A  
7B  
7C  
7D  
86  
87  
88  
89  
90  
91  
92  
93  
94  
95  
96  
97  
98  
99  
100  
101  
102  
103  
104  
105  
106  
107  
108  
109  
110  
111  
112  
113  
114  
115  
116  
117  
118  
119  
120  
121  
122  
123  
124  
125  
CHEETAH 15K.7 FC PRODUCT MANUAL, REV. E  
62  
 
11.5.12 Device control codes  
The drive inputs a Device Control Code on the DEV_CTRL_CODE lines at power up to determine the link rate on the Fibre  
Channel ports. Both ports run at the same rate. If the backpanel does not connect to these lines, the drive has 10K ohm pull  
up resistors that default the device control code to 7 (1.0625 GHz). Table lists the supported codes.  
Table 28 Device control code values  
2 (PIN 17)  
1 (PIN 18)  
0 (PIN 39)  
DEFINITION  
0
0
1
1
0
0
1
1
0
0
0
0
1
1
1
1
0
1
0
1
0
1
0
1
Reserved for power failure warning.  
Reserved for auto negotiation of link rate.  
Reserved.  
Reserved.  
Reserved.  
4.250 GHz operation on both ports.  
2.125 GHz operation on both ports.  
1.0625 GHz operation on both ports.  
11.6 SIGNAL CHARACTERISTICS  
This section describes the electrical signal characteristics of the drive’s input and output signals. See Table 24 on page 58  
for signal type and signal name information.  
11.6.1 TTL input characteristics  
Table 29 provides the TTL characteristics.  
Table 29 TTL characteristics  
STATE  
VOLTAGE  
CURRENT  
Input high  
1.9 < VIH < 5.5V  
-0.5V < VIL < 0.9V  
2.4 < VOH < 5.25V  
IIH = ±500nA max.  
IOL = ±500nA max.  
IOH < -3mA  
Input low  
Output high (-EN Bypass A, B)  
Output low (-EN Bypass A, B)  
Output high (-Parallel ESI)  
V
OL < 0.5V  
IOL < 3mA  
2.4 < VOH < 0.9 VCC  
VOH > 0.9VCC  
IOH < -2.4mA  
IOH < -500μA  
Output low (-Parallel ESI)  
0 < VOL < .45V  
IOL < 2.4mA  
IOH < -1.6mA  
Output high (all other outputs)  
2.4 < VOH < 0.9 VCC  
VOH > 0.9VCC  
IOH < -500μA  
Output low (all other outputs)  
0 < VOL < .45V  
IOL < 1.6mA  
CHEETAH 15K.7 FC PRODUCT MANUAL, REV. E  
63  
                     
11.6.2 LED driver signals  
Fault and Active LED signals are located in the FC-SCA connector (J1). See Table 30 for the output characteristics of the  
LED drive signals.  
Table 30 LED drive signal  
STATE  
CURRENT DRIVE AVAILABLE  
OUTPUT VOLTAGE  
LED off, high  
LED on, low  
0 < IOH < 100μA  
I
OL < -30 mA  
0 < VOL < 0.8V  
11.6.3 FC Differential output  
The serial output signal voltage characteristics are provided in Table 31. The outputs are not AC coupled in order to deliver  
maximum signal without rise and fall time degradation. You must AC couple the receiver to isolate potentially different DC  
characteristics of the outputs and the receiver.  
Table 31 FC Differential output characteristics  
DESCRIPTION  
PARAMETER  
NOTES  
Serial output voltage swing  
600 < Vout < 1300 mV  
Centered at 1.32V  
Bit Time  
XMIT Eye  
Figure 16. Transmit eye diagram  
CHEETAH 15K.7 FC PRODUCT MANUAL, REV. E  
64  
             
11.6.4 FC Differential input  
The serial input signal voltage characteristics are provided in Table 32.  
Table 32 FC Differential input characteristics  
DESCRIPTION  
PARAMETER  
NOTES  
Serial input voltage swing  
200 < Vin < 1.300 mV  
AC coupled  
Figure 17 provides the data valid eye diagram for typical and minimum requirements to recover data at the specified  
interface error rate. The inputs are AC coupled on the drive.  
941 ps  
659 ps  
376 ps  
Typical  
Minimum  
Figure 17. Receive eye diagram  
Table 33 Eye diagram data values  
LINK RATE  
1 GHZ  
2 GHZ  
4 GHZ  
Bit time  
941 ps  
470 ps  
235 ps  
1
2
XMIT eye  
RCV eye  
725 ps min.  
659 ps  
315 ps min.  
305 ps  
158 /113  
Typical  
145 ps  
113 ps  
Minimum  
395 ps  
226 ps  
1.  
2.  
Short Ideal load.  
End of compliance channel.  
CHEETAH 15K.7 FC PRODUCT MANUAL, REV. E  
65  
         
INDEX  
BB-Credit 41, 44  
BMS 36  
Numerics  
12 volt  
buffer  
pins 59  
data 7  
space 12  
3rd party reserve command 49  
5 volt pins 59  
busy status 55  
bypass circuit 15  
Byte check command 47  
A
Abort Sequence (ABTS) 39  
abort task set function 40  
AC coupling 59  
C
cache operation 12  
cache segments 12  
AC power requirements 20  
ACA active status 55  
ACA active, faulted initiator status 55  
Accept (ACC) 39  
Caching parameters page (08h) command 46  
caching write data 13  
Canadian Department of Communications 3  
capacity  
unformatted 10  
capacity, drive, programmable 9  
CBC 32  
acoustics 29  
active LED Out signal 60  
Actual retry count bytes command 46  
actuator  
assembly design 6  
CC 42, 43  
adaptive caching 55  
Address Discovery (ADISC) 39  
addresses 56  
CF 41, 44  
Change definition command 48  
character sync 15  
Admin SP 32  
charge pins 59  
AES-128 data encryption 32  
AFR 14  
air cleanliness 29  
check condition status 55  
Cipher Block Chaining 32  
Class 3 parameters 41, 44  
class B limit 3  
air flow 37  
illustrated 37  
Class valid 41, 44  
clear ACA function 40  
clear task set function 40  
commands supported 46  
Common features 41, 44  
Company ID 42, 43  
Compare command 47  
Concurrent sequences 41  
condensation 26  
Alternate credit model 41, 44  
altitude 26  
ambient 26  
Annualized Failure Rates (AFR) 15  
ANSI documents  
fibre channel 5  
SCSI 5  
arbitrated loop physical address (AL_PA) 37  
arbitration 37  
condition met/good status 55  
connector  
asynchronous event notification 55  
audible noise 3  
illustrated 57  
requirements 57  
auto negotiation of link rate 63  
auto write and read reallocation  
programmable 7  
automatic contingent allegiance 55  
average idle current 20, 21  
average rotational latency 10  
continuous vibration 29  
Continuously increasing offset 41, 44  
control code values 63  
Control mode page (0Ah) command 46  
cooling 37  
Copy and verify command 47  
Copy command 46  
CRC 15  
error 14  
Cryptographic erase 33  
Current profiles 22  
customer service 19  
B
Background Media Scan 36  
backpanel 57  
backplane 61  
Band 0 33  
BandMasterX 32  
basic link service frames 39  
Basic_Accept (BA_ACC) 39  
Basic_Reject (BA_RJT) 39  
BB 41, 44  
Cheetah 15K.7 FC Product Manual, Rev. E  
66  
signal characteristics 63  
specifications 20  
D
DAR 36  
electromagnetic compatibility 3  
electromagnetic susceptibility 29  
EMI requirements 3  
enable bypass  
Data Bands 33  
data bands 32  
Data encryption 32  
Data Encryption Key 32  
data heads  
port A 60  
port B 60  
read/write 10  
signal 60  
data rate  
state 15  
internal 10  
Enclosure Services interface 57  
Enclosure services page command 47  
encryption engine 32  
encryption key 33  
environmental  
data transfer rate 11  
data valid eye 65  
Date code page command 46  
DC power 57  
requirements 20  
limits 26  
decrypt 32  
requirements 14  
environmental control 29  
EraseMaster 32  
default MSID password 32  
defect and error management 34  
defects 34  
Deferred Auto-Reallocation 36  
deferred error handling 55  
DEK 32  
error  
detection mechanisms, FC 15  
management 34  
rates 14  
description 6  
error correction code  
96-bit Reed-Solomon 7  
Error recovery page (01h) command 46  
errors 34  
extended link service  
frames 39  
DEV_CTRL_CODE 63  
Device Behavior page command 46  
device control code values 63  
Device Identification page command 46  
device selection IDs 37  
devices 37  
reply frames 39  
dimensions 30  
Extended sense command 46  
Extent reservation command 49  
Disable page out command 47  
Disconnect/reconnect control (page 02h) command  
disk rotation speed 10  
Download microcode and save modes (5) 48  
Download microcode mode (4) 48  
Download microcode with offsets and save mode (7)  
Download microcode with offsets mode (6) 48  
drive 29  
drive capacity  
programmable 9  
drive characteristics 10  
drive ID 37  
drive ID/option select headers 37  
Drive Locking 33  
drive mounting 30, 38  
drive orientation 37  
drive select 57  
driver signals 64  
drivers and receivers 7  
dual port support 45  
F
fabric 44  
Fabric Address Notification (FAN) 39  
Fabric Login (FLOGI) 39  
FAN 44  
fault LED out signal 59  
FC differential input 65  
FC-AL  
document 5  
interface 37, 57  
options supported 45  
physical interface 56  
SCA device connector, illustrated 57  
selective reset 55  
FCC rules and regulations 3  
FCP  
for SCSI, document 5  
response codes 40  
task management functions 40  
FC-PH document 5  
FDE features 7  
E
features 7  
electrical  
interface 39  
description of connector 57  
Cheetah 15K.7 FC Product Manual, Rev. E  
67  
Federal Information Processing Standard 31  
Fibre Channel documents 5  
Fibre Channel Interface Control page (19h) 46  
Fibre Channel Interface Manual 2, 3  
Fibre Channel Services 39  
Field pointer bytes command 46  
FIPS 31  
inquiry data 50  
installation 37  
interface 37  
commands supported 46  
description 56  
error rate 14  
errors 14  
firmware 7  
illustrated 56  
corruption 49  
physical 56  
Firmware download option command 48  
firmware download port 33  
Firmware numbers page command 46  
flawed sector reallocation 7  
FLOGI  
received on Port A 43  
received on Port B 43  
Force unit access command 47  
form factor 7  
format 37  
requirements 39  
intermediate/condition met/good status 55  
intermediate/good status 55  
Intermix 41, 44  
internal data rate 10  
internal defects/errors 34  
internal drive characteristics 10  
IRAW 36  
J
J1 connector 37  
Jumper settings page command 46  
jumpers 37  
Format command execution time 11  
Format page (03h) command 46  
Format unit command 46  
FS 41, 42, 44  
L
function  
latency  
complete, code 00 40  
not supported, code 05 40  
reject, code 04 40  
average rotational 10, 11  
LBdata 48  
LED driver signals 64  
Link Service Reject (LS_RJT) 39  
link services supported 39  
Locking SP 32  
G
Global Data Band 33  
Good status 55  
gradient 26  
LockOnReset 33  
Lock-unlock-cache command 47  
Log select command 48  
Log sense command 48  
logic power 59  
ground shift noise 59  
grounding 38  
H
hard assigned arbitrated loop physical address logical block address 12  
(AL_PA) 37  
HDA 38  
heads  
read/write data 10  
heat removal 37  
host equipment 38  
hot plugging the drive 15  
humidity 26  
logical block reallocation scheme 7  
logical block size 7, 11  
logical segments 12  
Logout (LOGO) 39  
loop 56, 60  
disruption 15  
initialization 37  
loop position  
humidity limits 26  
FC-AL options 45  
loop position report  
FC-AL options 45  
LS_RJT 41, 44  
LSI circuitry 8  
I
ID and configuration options 7  
Idle Read After Write 36  
Implemented operating def. page command 46  
M
Information exceptions control page (1Ch) command maintenance 14  
Makers Secure ID 32  
Initiator control 41  
Inquiry command 46  
maximum delayed motor start 20, 21  
maximum start current 20, 21  
Cheetah 15K.7 FC Product Manual, Rev. E  
68  
mean time between failure (MTBF) 15  
media description 8  
Media Pre-Scan 36  
miscellaneous feature support  
Adaptive caching 55  
Asynchronous event notification 55  
Automatic contingent allegiance 55  
Deferred error handling 55  
FC-AL selective reset 55  
Parameter rounding 55  
Queue tagging 55  
Reporting actual retry count 55  
Segmented caching 55  
SMP = 1 in Mode Select command 55  
Synchronized (locked) spindle operation 55  
Zero latency read 55  
miscellaneous status support  
ACA active 55  
noise immunity 21  
non-operating 26, 27, 29  
temperature 26  
non-operating vibration 29  
O
office environment 29  
old port state  
FC-AL options 45  
OPEN Full Duplex  
FC-AL options 45  
OPEN half duplex  
FC-AL options 45  
Open sequences per exchange 41  
operating 26, 27, 29  
option configurations 37  
option selection 57  
options 9, 45  
orientation 27  
out-of-plane distortion 38  
ACA active, faulted initiator 55  
Busy 55  
Check condition 55  
Condition met/good 55  
Good 55  
P
P_LOGI  
Intermediate/condition met/good 55  
Intermediate/good 55  
Reservation conflict 55  
Task set full 55  
received on Port A 42  
received on Port B 42  
package size 27  
package test specification 5  
packaged 27  
parameter rounding 55  
pass-through state 15  
password 32  
miscorrected media data 14  
Mode select  
(10) command 49  
command 46  
Mode sense  
passwords 32  
PBC 56, 60  
PBdata 48  
(10) command 49  
command 46  
data, table 50, 52  
PCBA 38  
monitoring state 15  
motor start  
controls 61  
option 11  
mounting 38  
holes 38  
orientations 37  
mounting configuration 30  
mounting configuration dimensions 30  
MSID 32  
peak bits per inch 10  
peak operating current 20, 21  
peak-to-peak measurements 21  
performance characteristics  
detailed 10  
general 11  
performance degradation 27  
performance highlights 8  
physical damage 29  
physical interface 56  
description 56  
MTBF 15  
physical specifications 20  
PI 42, 43  
N
N_Port Login (PLOGI) 39  
payload 41  
payload values 42  
NN 41, 44  
Node Name 44  
Node name 41  
noise  
pin descriptions 58  
PN 41, 44  
port bypass circuit 15, 56, 60  
Port DISCovery 41  
Port Discovery (PDISC) 39  
port identifier field 42, 43  
port login 41  
audible 3  
Cheetah 15K.7 FC Product Manual, Rev. E  
69  
accept 42  
Port Name 44  
Port name (initiator’s) 41  
power 59  
recommended mounting 28  
Recoverable Errors 14  
recovered media data 14  
reference  
dissipation 24  
documents 5  
requirements, AC 20  
requirements, DC 20  
sequencing 22  
Regenerate command 49  
Register FC-4 Types (RFT_ID) 39  
Relative address command 47  
relative humidity 26  
Release command 46  
Released (10) command 49  
reliability 8  
Power control page (1Ah) command 46  
power distribution 3  
power failure warning 63  
PowerCycle 33  
Prefetch command 47  
prefetch/multi-segmented cache control 12  
preventive maintenance 14  
private loop  
FC-AL options 45  
Proc Assc 41  
Process Accept (ACC) 43  
Process Login (PRLI) 39, 42  
Process Login Accept (ACC) payload 43  
process login payload data 42  
Process Logout (PRLO) 39  
programmable drive capacity 9  
protection of data at rest 32  
public loop  
specifications 14  
reliability and service 15  
repair and return information 19  
reporting actual retry count 55  
Request sense command 46  
reservation conflict status 55  
Reserve command 46  
Reserved (10) command 49  
resonance 27  
return information 19  
Rezero unit command 46  
Rigid disk drive geometry page  
command 46  
RNG 32  
FC-AL options 45  
rotation speed 10  
pull down resistor 60  
running disparity 15  
Q
S
queue tagging 55  
safety 3  
SCA part numbers 57  
SCSI interface  
commands supported 46  
Seagate Technology Support Services 1  
Search data  
equal command 47  
high command 47  
low command 47  
Secure ID 32  
security partitions 32  
Security Protocol In 32  
Security Protocol Out 32  
Seek command 46  
seek error  
R
radio interference regulations 3  
Random number generator 32  
Random relative offset 41, 44  
RCD bit 12  
Read buffer command 48  
Read capacity command 47  
Read combined header and data mode (0) 48  
Read command 46  
Read data mode (2) 48  
Read defect data command 47  
Read descriptor mode (3) 48  
read error rates 14, 34  
Read extended command 47  
Read Link Status (RLS) 39  
Read long command 48  
read/write data heads 10  
Reassign blocks command 46  
Receive buffer field size 41, 44  
receive buffer field size 42  
Receive diagnostic results command 47  
receive eye  
defined 14  
rate 14  
Seek extended command 47  
seek performance characteristics 10  
seek time  
average typical 10  
full stroke typical 10  
single track typical 10  
segmented caching 55  
SEL ID 37  
diagram 65  
receivers 59  
lines 61  
Cheetah 15K.7 FC Product Manual, Rev. E  
70  
standard feature 7  
regulation 3  
Self-Encrypting Drive (SED) Users Guide 2  
self-encrypting drives 32  
See also cooling  
terminate task function 40  
Self-Monitoring Analysis and Reporting Technology terminators 37  
Test unit ready command 46  
Third-party Process Logout (TRPLO) 39  
tracks per inch 10  
Translate page command 47  
transmit eye diagram 64  
transmitters 59  
transporting the drive 19  
Trusted Computing Group 5, 6, 32  
TTL input characteristics 63  
Send diagnostics page command 47  
Sequential delivery 41, 44  
Service Options 44  
Service options 41  
Set limits command 47  
shielding 3  
shipping 19  
shipping container 26  
shock 27  
and vibration 27  
shock mount 38  
U
UI 42, 43  
unformatted 8  
SID 32  
unique identifier 42, 43  
Unit attention page (00h) command 46  
Unit serial number page command 46  
Unrecoverable Errors 14  
unrecovered media data 14  
signal  
characteristics 63  
LED driver 64  
single-unit shipping pack kit 9  
SMART 8, 15  
SMP = 1 in Mode Select command 55  
SO 41, 44  
spindle brake 7  
Stacked connection req. 41, 44  
standards 3  
Start unit/stop unit command 47  
start/stop time 11  
Supported diagnostics pages command 47  
surface stiffness  
allowable for non-flat surface 38  
switches 37  
Synchronize cache command 47  
synchronized spindle  
operation 55  
V
Valid version level 41, 44  
Verify command 47, 49  
Verify error recovery page (07h) command 46  
vibration 27, 29  
Vital product data page command 46  
W
warranty 19  
word sync 15  
Write and verify command 47  
Write buffer command 47  
Write combined header and data mode (0) 48  
Write command 46  
Write data mode (2) 48  
Write extended command 47  
Write long command 48  
Write same command 48, 49  
system chassis 38  
T
target reset function 40  
task management functions 40  
Abort task set 40  
X
XD read 48  
Clear ACA 40  
Clear task set 40  
Target reset 40  
terminate task 40  
XD write 48  
XD write extended command 49  
XID reassign 41  
XP write 48  
task management response codes 40  
Function complete 00 40  
Function not supported 05 40  
Function reject 04 40  
task set full status 55  
TCG 32  
Z
zero latency read 55  
zone bit recording (ZBR) 7  
TCG Storage Architecture Core Specification 3  
temperature 26, 37  
limits 26  
non-operating 26  
Cheetah 15K.7 FC Product Manual, Rev. E  
71  
Seagate Technology LLC  
AMERICAS Seagate Technology LLC 10200 South De Anza Boulevard, Cupertino, California 95014, United States, 408-658-1000  
ASIA/PACIFIC Seagate Singapore International Headquarters Pte. Ltd. 7000 Ang Mo Kio Avenue 5, Singapore 569877, 65-6485-3888  
EUROPE, MIDDLE EAST AND AFRICA Seagate Technology SAS 16-18 rue du Dôme, 92100 Boulogne-Billancourt, France, 33 1-4186 10 00  
Publication Number: 100516225, Rev. E  
December 2012  

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