Seagate Savvio 15K1 FC ST936751FC User Manual

Product Manual  
®
Savvio 15K.1 FC  
ST973451FC  
ST936751FC  
100384763  
Rev. B  
August 2007  
Contents  
5.2.7  
Savvio 15K.1 FC Product Manual, Rev. B  
i
9.4  
ii  
Savvio 15K.1 FC Product Manual, Rev. B  
10.0  
Savvio 15K.1 FC Product Manual, Rev. B  
iii  
iv  
Savvio 15K.1 FC Product Manual, Rev. B  
List of Figures  
Savvio 15K.1 FC Product Manual, Rev. B  
v
1.0  
Scope  
This manual describes Seagate Technology® LLC, Savvio® 15K.1 FC (Fibre Channel) disc drives.  
Savvio 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 77767496) describes the  
general Fibre Channel Arbitrated Loop characteristics of this and other Seagate Fibre Channel drives.  
Figure 1. Savvio 15K.1 family disc drive  
Savvio 15K.1 FC Product Manual, Rev. B  
1
     
2
Savvio 15K.1 FC Product Manual, Rev. B  
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 opti-  
mum 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 regu-  
lation. In particular, the drive must be securely mounted in order to guarantee the specified performance char-  
acteristics. Mounting by bottom holes must meet the requirements of Section 8.3.  
2.1  
Standards  
The Savvio 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 Savvio disc drive is a UL recognized component per UL1950, CSA certified to CAN/CSA C22.2 No. 950-  
95, and VDE or TUV certified to EN60950.  
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 Communica-  
tions.  
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 Regula-  
tions 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 con-  
troller.  
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.  
Savvio 15K.1 FC Product Manual, Rev. B  
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 sys-  
tem represents the most popular characteristics for test platforms. The system configurations include:  
• Typical current use microprocessor  
• 3.5-inch floppy disc drive  
• Keyboard  
• Monitor/display  
• Printer  
• External modem  
• 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 Man-  
agement Agency (SMA).  
Korean MIC  
If this model has the Korean Ministry of Information and Communication (MIC) 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 the Chinese National Standard (CNS) 13438 marking, it complies with Chinese National Stan-  
dard (CNS) 13438 and meets the Electromagnetic Compatibility (EMC) Framework requirements of the Tai-  
wanese 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 rep-  
resentations 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 disc drives documented in this publication. Current supplier declarations include disclosure of the inclusion  
of any RoHS-regulated substance in such parts or materials.  
4
Savvio 15K.1 FC Product Manual, Rev. B  
   
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 operat-  
ing procedures that ensure that restricted substances are not utilized in our manufacturing operations, labora-  
tory analytical validation testing, and an internal auditing process to ensure that all standard operating  
procedures are complied with.  
2.3  
Reference documents  
Savvio 15K.1 FC Installation Guide  
Fibre Channel Interface Manual  
SCSI Commands Reference Manual  
Seagate part number: 100384764  
Seagate part number: 100293070  
Seagate part number: 100293068  
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  
X3.270-1996  
NCITS 305-199X  
(SCSI-3) Architecture Model  
(SCSI-3) Enclosure Services  
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.  
Savvio 15K.1 FC Product Manual, Rev. B  
5
                     
6
Savvio 15K.1 FC Product Manual, Rev. B  
3.0  
General description  
Savvio drives combine Tunneling Magnetoresistive (TMR) heads and a Fibre Channel interface to provide high  
performance, high capacity data storage for a variety of systems including engineering workstations, network  
servers, mainframes, and supercomputers. Savvio drives also support 4-Gbit Fibre Channel which can transfer  
data at up to 400 Mbytes per second and 800 Mbytes per second in dual-loop configurations.  
Savvio drives support the Fibre Channel Arbitrated Loop (FC-AL) and SCSI Fibre Channel Protocol as  
described in the ANSI specifications, this document, the SCSI Commands Reference Manual (part number  
100293068), and the Fibre Channel Interface Manual (part number 100293070) which describes the general  
interface characteristics of this drive. Savvio drives are classified as intelligent peripherals and provide level 2  
conformance (highest level) with the ANSI SCSI-1 standard.  
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.  
Savvio 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 dur-  
ing 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.  
Savvio 15K.1 FC Product Manual, Rev. B  
7
     
3.1  
Standard features  
Savvio drives have the following standard features:  
• Perpendicular recording technology  
• 4-Gbit Fibre Channel interface. For 4 gigabit operation, the block size must be divisable by 8  
• 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 com-  
mands. Jumpers are not used on the drive.  
• 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 SFF 2.5-inch dimensions  
• Programmable logical block reallocation scheme  
• Flawed logical block reallocation at format time  
• Programmable auto write and read reallocation  
• No preventive maintenance or adjustments required  
• Dedicated head landing zone  
• Embedded servo design  
• Automatic shipping lock  
• Self-diagnostics performed when power is applied to the drive  
• Zone bit recording (ZBR)  
• Vertical, horizontal, or top down mounting  
• Dynamic spindle brake  
• 16 Mbyte data buffer (see Section 4.5).  
• Drive Self Test (DST)  
• BackGround Media Scan (BGMS)  
• Idle Read After Write (IRAW)  
• Power Save  
8
Savvio 15K.1 FC Product Manual, Rev. B  
                         
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  
• Firmware-controlled multisegmented cache designed to dynamically adjust segments for enhanced system  
performance.  
• 400 Mbytes/sec maximum instantaneous data transfers per port  
• 15k RPM spindle; average latency = 2.0 msec  
• Background processing of queue  
• Supports start and stop commands (spindle stops spinning)  
• Adaptive seek velocity; improved seek performance  
3.4  
Reliability  
• Annualized Failure Rate (AFR) of 0.55%  
• Mean Time Between Failures (MTBF) of 1,600,000 hours  
• Incorporates industry-standard Self-Monitoring Analysis and Reporting Technology (S.M.A.R.T.)  
• 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 a multiple of 4 bytes. Users having the necessary equipment may modify the data block size before  
issuing a format command and obtain different formatted capacities than those listed.  
To provide a stable target capacity environment and at the same time provide users with flexibility if they  
choose, Seagate recommends product planning in one of two modes:  
1. Seagate designs specify capacity points at certain sector 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:  
ST973451FC  
Decimal  
ST936751FC  
Decimal  
Sector Size  
512  
Hex  
Hex  
143,374,744  
140,395,093  
137,577,184  
136,331,467  
88BB998h  
85E4255h  
83342E0h  
82040CBh  
71,687,372  
70,197,547  
68,766,592  
68,165,733  
445DCCCh  
42F212Bh  
4194B80h  
4102065h  
520  
524  
528  
2. Seagate drives also may be used at the maximum available capacity at a given sector size, but the excess  
capacity above the guaranteed level will vary between other drive families and from generation to genera-  
tion, depending on how each sector 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 for-  
ward compatibility takes precedence.  
Savvio 15K.1 FC Product Manual, Rev. B  
9
                   
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 (6) parameter list table in the Fibre Channel Interface Manual, part number 100293070. Refer to  
the Parameter list block descriptor number of blocks field. A value of zero in the number of blocks field indi-  
cates 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 accessories  
OEM standard drives are shipped with the Savvio 15K.1 FC Installation Guide (part number 100384764) and  
the Safety and Regulatory Agency Specifications, part number 75789512 (unless otherwise specified).  
3.7  
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 planning single unit distribution should specify this option.  
• The Savvio 15K.1 FC Installation Guide, part number 100384764, is usually included with each standard  
OEM drive shipped, but extra copies may be ordered.  
• The Safety and Regulatory Agency Specifications, part number 75789512, is usually included with each  
standard OEM drive shipped, but extra copies may be ordered.  
10  
Savvio 15K.1 FC Product Manual, Rev. B  
         
4.0  
Performance characteristics  
This section provides detailed information concerning performance-related characteristics and features of Sav-  
vio drives.  
4.1  
Internal drive characteristics  
ST973451FC  
ST936751FC  
Drive capacity  
73.4  
36.2  
Gbytes (formatted, rounded off value)  
Read/write data heads  
Tracks per surface (total)  
Tracks per inch  
Peak bits per inch  
Areal Density  
4
2
42,554  
150  
861.81  
130.58  
42,554  
150  
861.81  
130.58  
Tracks (user accessible)  
kTPI (average)  
kBPI  
2
Gbit/in  
Internal data rate  
957.51 to 1,282.08  
57-89  
15k  
957.51 to 1,282.08  
57-89  
15k  
Mbits/sec (variable with zone)  
Mbytes/sec (variable with zone)  
revolutions/min (RPM)  
msec  
Sustained data transer rate  
Disc rotation speed  
Avg rotational latency  
2.0  
2.0  
4.2  
Seek performance characteristics  
See Section 9.5, "FC-AL physical interface" on page 57 and the Fibre Channel Interface Manual (part number  
100293070) for additional timing details.  
4.2.1  
Access time  
1 2  
,
Not Including controller overhead  
(msec)  
Read  
2.6  
Write  
3.1  
3 4  
,
Average  
Typical  
Single track  
Full stroke  
Typical3,4  
Typical3,4  
0.2  
0.4  
4.9  
5.5  
1.  
2.  
3.  
Execution time measured from receipt of the FCP Command to the FCP Response.  
Assumes no errors and no sector has been relocated.  
Typical access times are measured under nominal conditions of temperature, volt-  
age, and horizontal orientation as measured on a representative sample of drives.  
Access to data = access time + latency time.  
4.  
Savvio 15K.1 FC Product Manual, Rev. B  
11  
                                                 
4.2.2  
Format command execution time  
ST973451FC  
ST936751FC  
26 minutes  
18 minutes  
Maximum (with verify)  
52 minutes  
35 minutes  
Maximum (without verify)  
4.2.3  
General performance characteristics  
Sustained transfer rate  
79 to 112 Mbytes/sec  
Fibre Channel Interface maximum instantaneous transfer rate  
400 Mbytes/sec* per port  
(dual port = 800 Mbytes/sec*)  
Logical block sizes  
- 512 (default)  
- 520  
- 524  
- 528  
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.  
4.3  
Start/stop time  
The drive accepts the commands listed in the SAS Interface Manual less than 3 seconds after DC power has  
been applied.  
If the drive receives a NOTIFY (ENABLE SPINUP) primitive through either port and has not received a START  
STOP UNIT command with the START bit equal to 0, the drive becomes ready for normal operations within 20  
seconds (excluding the error recovery procedure).  
If the drive receives a START STOP UNIT command with the START bit equal to 0 before receiving a NOTIFY  
(ENABLE SPINUP) primitive, the drive waits for a START STOP UNIT command with the START bit equal to 1.  
After receiving a START STOP UNIT command with the START bit equal to 1, the drive waits for a NOTIFY  
(ENABLE SPINUP) primitive. After receiving a NOTIFY (ENABLE SPINUP) primitive through either port, the  
drive becomes ready for normal operations within 20 seconds (excluding the error recovery procedure).  
If the drive receives a START STOP UNIT command with the START bit and IMMED bit equal to 1 and does  
not receive a NOTIFY (ENABLE SPINUP) primitive within 5 seconds, the drive fails the START STOP UNIT  
command.  
12  
Savvio 15K.1 FC Product Manual, Rev. B  
                   
The START STOP UNIT command may be used to command the drive to stop the spindle. Stop time is 30 sec-  
onds (maximum) from removal of DC power. There is no power control switch on the drive.  
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 opera-  
tion, the prefetch feature overlaps cache operation somewhat as described in sections 4.5.1 and 4.5.2.  
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 can be 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 Fibre Channel Interface Manual), data requested by the host with a read  
command is retrieved from the buffer, if possible, before any disc access is initiated. If cache operation is not  
enabled, the buffer (still segmented with the required number of segments) is still used, but only as circular  
buffer segments during disc 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. On a  
cache miss, all data transfers to the host are in accordance with buffer-full ratio rules. On a cache hit, the drive  
ignores the buffer-full ratio rules. See the explanation provided with the information about Mode Page 02h (dis-  
connect/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 the first logical block is 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 disc 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 capa-  
bility 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 parameter.  
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.  
Savvio 15K.1 FC Product Manual, Rev. B  
13  
                   
If read caching is enabled (RCD=0), then data written to the medium is retained in the cache to be made avail-  
able 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 gen-  
erated.  
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.  
Table 19 shows the mode default settings for the drive.  
4.5.2  
Prefetch operation  
If the Prefetch feature is enabled, data in contiguous logical blocks on the disc 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 disc 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.  
14  
Savvio 15K.1 FC Product Manual, Rev. B  
 
5.0  
Reliability specifications  
The following reliability specifications assume correct host and drive operational interface, including all inter-  
face timings, power supply voltages, environmental requirements and drive mounting constraints.  
Less than 10 errors in 108 seeks  
Seek error rate  
1
Read Error Rates  
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  
Recovered Data  
Unrecovered Data  
Miscorrected Data  
Less than 1 error in 1012 bits transferred with minimum receive eye.  
Less than 1 error in 1014 bits transferred with typical receive eye.  
Interface error rate  
MTBF  
1,600,000 hours  
0.55%  
Annualized Failure Rate (AFR)  
Preventive maintenance  
None required  
1. Error rate specified with automatic retries and data correction with ECC enabled and all flaws reallocated.  
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  
• 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.  
5.1.1  
Recoverable Errors  
Recoverable errors are those detected and corrected by the drive, and do not require user intervention.  
Recoverable Data errors will use correction, although ECC on-the-fly is not considered for purposes of recov-  
ered error specifications.  
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.  
Savvio 15K.1 FC Product Manual, Rev. B  
15  
                               
5.1.2  
Unrecoverable Errors  
An unrecoverable data error is defined as a failure of the drive to recover data from the media. These errors  
occur due to head/media or write problems. Unrecoverable data errors are only detected during read opera-  
tions, but not caused by the read. If an unrecoverable data error is detected, a MEDIUM ERROR (03h) in the  
Sense Key will be reported. Multiple unrecoverable data errors resulting from the same cause are treated as 1  
error.  
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  
8
Key. Recoverable seek errors are 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.  
5.2  
Reliability and service  
You can enhance the reliability of Savvio disc drives by ensuring that the drive receives adequate cooling. Sec-  
tion 6.0 provides temperature measurements and other information that may be used to enhance the service  
life of the drive. Section 8.1 provides recommended air-flow information.  
5.2.1  
Annualized Failure Rate (AFR) and Mean Time Between Failure (MTBF)  
The production disc drive achieves an AFR of 0.55% (MTBF of 1,600,000 hours) when operated in an environ-  
ment that ensures the case temperatures do not exceed the values specified in Section 6.4.1. Operation at  
case temperatures outside the specifications in Section 6.4, "Environmental limits", may increase the product  
AFR (decrease the MTBF). The AFR is a population statistic not relevant to individual units.  
The AFR specification is based on the following assumptions for Business Critical Storage System environ-  
ments:  
• 8,760 power-on hours per year  
• 250 average on/off cycles per year  
• Operating at nominal voltages  
• System will provide adequate cooling to ensure the case temperatures specified in Section 6.4 are not  
exceeded. Temperatures outside the specifications in Section 6.4 may increase the product AFR and  
decrease the MTBF.  
5.2.2  
Preventive maintenance  
No routine scheduled preventive maintenance is required.  
16  
Savvio 15K.1 FC Product Manual, Rev. B  
                         
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 mecha-  
nisms, character sync, running disparity, word sync, and CRC are able to detect any error. Recovery is initiated  
based on the type of error.  
The disc 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 haz-  
ard, 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 instanta-  
neous drive failures.  
Each monitored attribute has been selected to monitor a specific set of failure conditions in the operating per-  
formance of the drive and the thresholds are optimized to minimize “false” and “failed” predictions.  
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 DEX-  
CPT 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 mea-  
surement 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.  
Savvio 15K.1 FC Product Manual, Rev. B  
17  
                             
Performance impact  
S.M.A.R.T. attribute data is saved to the disc so that the events that caused a predictive failure can be recre-  
ated. 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 disc is uninterruptable. The maxi-  
mum on-line only processing delay is summarized below:  
Maximum processing delay  
On-line only delay  
Fully-enabled delay  
DEXCPT = 0, PERF = 1  
DEXCPT = 0, PERF = 0  
S.M.A.R.T. delay times  
50 milliseconds  
300 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 inter-  
val 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 firm-  
ware keeps a running count of the number of times the error rate for each attribute is unacceptable. To accom-  
plish 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 pre-  
dictive 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.  
5.2.5  
Thermal monitor  
Savvio 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 tem-  
perature exceeds a set threshold. The temperature is measured at power-up and then at ten-minute intervals  
after power-up.  
18  
Savvio 15K.1 FC Product Manual, Rev. B  
 
The thermal monitor system generates a warning code of 01-0B01 when the temperature exceeds the speci-  
fied 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 65°C. If you specify a temperature greater than 68°C in this field, the temperature is rounded  
down to 65°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  
Description  
Primary Temperature  
0000h  
0001h  
Reference Temperature  
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 text  
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.  
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.  
Savvio 15K.1 FC Product Manual, Rev. B  
19  
 
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 disc  
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.  
The anticipated length of the Extended test is reported through the Control Mode page.  
20  
Savvio 15K.1 FC Product Manual, Rev. B  
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 param-  
eter 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 applica-  
ble 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 pur-  
chase documentation.  
The remaining warranty for a particular drive can be determined by calling Seagate Customer Service at  
1-800-468-3472. You can also determine remaining warranty using the Seagate web site (www.seagate.com).  
The drive serial number is 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 tran-  
sit. Contact your authorized Seagate distributor to purchase additional boxes. Seagate recommends shipping  
by an air-ride carrier experienced in handling computer equipment.  
Savvio 15K.1 FC Product Manual, Rev. B  
21  
       
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.  
22  
Savvio 15K.1 FC Product Manual, Rev. B  
     
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.  
Table 2:  
DC power requirements for ST973451FC  
ST973451FC (1 Gbit) ST973451FC (2 Gbit) ST973451FC (4 Gbit)  
Notes (Amps)  
(Amps)  
+12V [2]  
±5% [2]  
0.19  
(Amps)  
+5V  
(Amps)  
+12V [2]  
±5% [2]  
0.19  
(Amps)  
+5V  
(Amps)  
+12V [2]  
±5% [2]  
0.19  
Voltage  
+5V  
Regulation  
[5]  
±5%  
0.64  
±5%  
±5%  
Avg idle current DCX  
Maximum starting current  
(peak DC) DC  
(peak AC) AC  
[1] [7]  
0.65  
0.72  
3σ [3]  
3σ [3]  
0.72  
1.00  
0.51  
1.19  
1.75  
0.02  
0.74  
0.99  
0.53  
1.19  
1.71  
0.02  
0.80  
1.07  
0.59  
1.19  
1.73  
0.02  
Delayed motor start (max) DC 3σ [1] [4]  
Peak operating current:  
Typical DCX  
[1] [6]  
0.65  
0.65  
1.28  
0.37  
0.39  
1.16  
0.67  
0.67  
1.34  
0.37  
0.39  
1.16  
0.73  
0.74  
1.38  
0.36  
0.37  
1.16  
Maximum DC  
3σ [1]  
3σ  
Maximum (peak) DC  
Savvio 15K.1 FC Product Manual, Rev. B  
23  
                         
Table 3:  
DC power requirements for ST936751FC  
ST936751FC (1 Gbit) ST936751FC (2 Gbit) ST936751FC (4 Gbit)  
Notes (Amps)  
(Amps)  
+12V [2]  
±5% [2]  
0.15  
(Amps)  
+5V  
(Amps)  
+12V [2]  
±5% [2]  
0.15  
(Amps)  
+5V  
(Amps)  
+12V [2]  
±5% [2]  
0.15  
Voltage  
+5V  
Regulation  
[5]  
±5%  
0.71  
±5%  
±5%  
Avg idle current DCX  
Maximum starting current  
(peak DC) DC  
(peak AC) AC  
[1] [7]  
0.72  
0.79  
3σ [3]  
3σ [3]  
0.74  
1.23  
0.42  
1.08  
1.49  
0.01  
0.76  
1.32  
0.44  
1.07  
1.49  
0.01  
0.84  
1.06  
0.51  
1.07  
1.46  
0.02  
Delayed motor start (max) DC 3σ [1] [4]  
Peak operating current:  
Typical DCX  
[1] [6]  
0.67  
0.67  
1.36  
0.34  
0.37  
1.12  
0.69  
0.71  
1.40  
0.34  
0.36  
1.10  
0.73  
0.77  
1.48  
0.34  
0.36  
1.10  
Maximum DC  
3σ [1]  
3σ  
Maximum (peak) DC  
[1] Measured with average reading DC ammeter. Instantaneous +12V current peaks will exceed these val-  
ues. Power supply 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  
15,000 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 2.  
[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  
[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 1.7% 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.  
24  
Savvio 15K.1 FC Product Manual, Rev. B  
       
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.  
+5V  
+12V  
0 to 100 kHz  
150mV  
100mV  
150mV  
100mV  
100 kHz to 10 MHz  
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 below.  
Note: All times and currents are typical. See Table 2 for maximum current requirements.  
Figure 2. Typical ST973451FC drive +12V and +5V current profiles  
Savvio 15K.1 FC Product Manual, Rev. B  
25  
               
Figure 3. Typical ST936751FC drive +12V and +5V current profiles  
26  
Savvio 15K.1 FC Product Manual, Rev. B  
 
6.3  
Power dissipation  
ST973451FC  
Typical power dissipation under idle conditions in 1Gb operation is 5.58 watts (19.04 BTUs per hour).  
Typical power dissipation under idle conditions in 2Gb operation is 5.58 watts (19.04 BTUs per hour).  
Typical power dissipation under idle conditions in 4Gb operation is 5.88 watts (20.06 BTUs per hour).  
To obtain operating power for typical random read operations, refer to the following I/O rate curve (see Figure  
4). Locate the 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.  
CURRENT/POWER vs THROUGHPUT (FC - 1GB)  
Random 8 Block Reads  
1. 4 0 0  
1. 2 0 0  
1. 0 0 0  
0.800  
0.600  
0.400  
0.200  
0.000  
14 . 0 0  
12 . 0 0  
10 . 0 0  
8.00  
6.00  
4.00  
2.00  
0.00  
5Volt A  
12 V o lt A  
Watts  
0.0  
50.0  
100.0  
150.0  
200.0  
250.0  
300.0  
350.0  
400.0  
I/Os per Second  
Figure 4. ST973451FC DC current and power vs. input/output operations per second at 1 Gbit  
CURRENT/POWER vs THROUGHPUT (FC - 2GB)  
Random 8 Block Reads  
1. 4 0 0  
1. 2 0 0  
1. 0 0 0  
0.800  
0.600  
0.400  
0.200  
0.000  
14 . 0 0  
12 . 0 0  
10 . 0 0  
8.00  
6.00  
4.00  
2.00  
0.00  
5Volt A  
12 V o lt A  
Watts  
0.0  
50.0  
100.0  
150.0  
200.0  
250.0  
300.0  
350.0  
400.0  
I/Os per Second  
Figure 5. ST973451FC DC current and power vs. input/output operations per second at 2 Gbit  
Savvio 15K.1 FC Product Manual, Rev. B  
27  
       
CURRENT/POWER vs THROUGHPUT (FC - 4GB)  
Random 8 Block Reads  
1. 4 0 0  
1. 2 0 0  
1. 0 0 0  
0.800  
0.600  
0.400  
0.200  
0.000  
14 . 0 0  
12 . 0 0  
10 . 0 0  
8.00  
6.00  
4.00  
2.00  
0.00  
5Volt A  
12 V o lt A  
Watts  
0.0  
50.0  
100.0  
150.0  
200.0  
250.0  
300.0  
350.0  
400.0  
I/Os per Second  
Figure 6. ST973451FC DC current and power vs. input/output operations per second at 4 Gbit  
28  
Savvio 15K.1 FC Product Manual, Rev. B  
 
ST936751FC  
Typical power dissipation under idle conditions in 1Gb operation is 5.35 watts (18.26 BTUs per hour).  
Typical power dissipation under idle conditions in 2Gb operation is 5.4 watts (18.43 BTUs per hour).  
Typical power dissipation under idle conditions in 4Gb operation is 5.75 watts (19.62 BTUs per hour).  
To obtain operating power for typical random read operations, refer to the following I/O rate curve (see Figure  
4). Locate the 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.  
FC CURRENT/POWER vs THROUGHPUT (FC - 1GB)  
Random 8 Block Reads  
1. 4 0 0  
1. 2 0 0  
1. 0 0 0  
0.800  
0.600  
0.400  
0.200  
0.000  
14 . 0 0  
12 . 0 0  
10 . 0 0  
8.00  
6.00  
4.00  
2.00  
0.00  
5Volt A  
12 V o lt A  
Watts  
0.0  
50.0  
100.0  
150.0  
200.0  
250.0  
300.0  
350.0  
400.0  
450.0  
I/Os per Second  
Figure 7. ST936751FC DC current and power vs. input/output operations per second at 1 Gbit  
FC CURRENT/POWER vs THROUGHPUT (FC - 2GB)  
Random 8 Block Reads  
1. 4 0 0  
1. 2 0 0  
1. 0 0 0  
0.800  
0.600  
0.400  
0.200  
0.000  
14 . 0 0  
12 . 0 0  
10 . 0 0  
8.00  
6.00  
4.00  
2.00  
0.00  
5Volt A  
12 V o lt A  
Watts  
0.0  
50.0  
100.0  
150.0  
200.0  
250.0  
300.0  
350.0  
400.0  
450.0  
I/Os per Second  
Figure 8. ST936751FC DC current and power vs. input/output operations per second at 2 Gbit  
Savvio 15K.1 FC Product Manual, Rev. B  
29  
   
FC CURRENT/POWER vs THROUGHPUT (FC - 4GB)  
Random 8 Block Reads  
1. 4 0 0  
1. 2 0 0  
1. 0 0 0  
0.800  
0.600  
0.400  
0.200  
0.000  
14 . 0 0  
12 . 0 0  
10 . 0 0  
8.00  
6.00  
4.00  
2.00  
0.00  
5Volt A  
12 V o lt A  
Watts  
0.0  
50.0  
100.0  
150.0  
200.0  
250.0  
300.0  
350.0  
400.0  
450.0  
I/Os per Second  
Figure 9. ST936751FC DC current and power vs. input/output operations per second at 4 Gbit  
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  
With cooling designed to maintain the case temperatures, 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 36°F (20°C)  
per hour. The enclosure for the drive should be designed such that these temperatures not exceeded. Air  
flow may be needed to achieve these temperature values (see Section 8.2). Operation at case tempera-  
tures above these values may adversely affect the drives ability to meet specifications.  
The MTBF specification for the drive is based on operating in an environment that ensures that the case  
temperatures are not exceeded. Occasional excursions to drive ambient temperatures of 131°F (55°C) or  
41°F (5°C) may occur without impact to specified MTBF. Air flow may be needed to achieve these tempera-  
tures. Continual or sustained operation at case temperatures above these values may degrade MTBF. The  
maximum allowable continuous or sustained HDA case temperature for the rated MTBF is 122°F (50°C).  
To confirm that the required cooling for the electronics and HDA is provided, place the drive in its final  
mechanical configuration, perform random write/read operations. After the temperatures stabilize, measure  
the case temperature of the drive.  
The maximum allowable HDA case temperature is 60°C. Operation of the drive at the maximum case tem-  
perature is intended for short time periods only. Continuous operation at the elevated temperatures will  
reduce product reliability.  
30  
Savvio 15K.1 FC Product Manual, Rev. B  
             
b. Non-operating  
–40° to 158°F (–40° to 70°C) package ambient with a maximum gradient of 36°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.  
Check Point  
Figure 10. 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  
–200 to +10,000 feet (–60.96 to +3,048 meters)  
b. Non-operating  
–200 to +40,000 feet (–60.96 to +12,210 meters)  
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 methods shown in Figure 11, and in accordance with the restrictions of Section 8.3.  
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 maximum duration of 11 msec (half sinewave). The drive, as installed for normal  
operation, shall operate error free while subjected to intermittent shock not exceeding 20 Gs at a maximum  
duration of 2 msec (half sinewave). Shock may be applied in the X, Y, or Z axis.  
b. Operating—abnormal  
Equipment, as installed for normal operation, does not incur physical damage while subjected to intermit-  
tent shock not exceeding 40 Gs at a maximum duration of 11 msec (half sinewave). Shock occurring at  
Savvio 15K.1 FC Product Manual, Rev. B  
31  
                               
abnormal levels may promote degraded operational performance during the abnormal shock period. Speci-  
fied 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 two times per second.  
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 75 Gs at a maximum duration of 11 msec (half  
sinewave) shall not exhibit device damage or performance degradation. Shock may be applied in the X, Y,  
or Z axis.  
The drive subjected to nonrepetitive shock not exceeding 300 Gs at a maximum duration of 2 msec (half  
sinewave) does not exhibit device damage or performance degradation. Shock may be applied in the X, Y,  
or Z axis.  
The drive subjected to nonrepetitve shock not exceeding 200 Gs at a maximum duration of 0.5 msec (half  
sinewave) does not exhibit device damage or performance degradation. Shock may be applied in the X, Y,  
or Z axis.  
d. Packaged  
Disc 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  
Any  
Drop height  
<600 cu in (<9,800 cu cm)  
600-1800 cu in (9,800-19,700 cu cm)  
>1800 cu in (>19,700 cu cm)  
>600 cu in (>9,800 cu cm)  
60 in (1524 mm)  
48 in (1219 mm)  
42 in (1067 mm)  
36 in (914 mm)  
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.  
32  
Savvio 15K.1 FC Product Manual, Rev. B  
         
Z
X
Y
X
Z
Y
Figure 11. Recommended mounting  
Savvio 15K.1 FC Product Manual, Rev. B  
33  
   
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  
10-500 Hz @ 1.0 G (zero to peak)  
Vibration may be applied in the X, Y, or Z axis.  
Operating normal translational random flat profile  
10 - 400 Hz  
0.4 GRMS  
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  
10-500 Hz @ 1.5 G (X, Y, or Z axis)  
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  
10 - 500 Hz  
1.2 GRMS  
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 @ 0.040 inches (1.02 mm) displacement (zero to peak)  
20-500 Hz @ 3.0 G (zero to peak)  
Vibration may be applied in the X, Y, or Z axis.  
Non-operating translational random flat profile  
10 - 500 Hz  
1.2 GRMS  
6.4.5  
Air cleanliness  
The drive is designed to operate in a typical office environment with minimal environmental control.  
6.4.6  
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 corro-  
sive chemicals as electronic drive component reliability can be affected by the installation environment. The sil-  
ver, 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 vulca-  
nized rubber, that can outgas corrosive compounds sshould be minimized or eliminated. The useful life of any  
electronic equipment may be extended by replacing materials near circuitry with sulfide-free alternatives.  
34  
Savvio 15K.1 FC Product Manual, Rev. B  
                       
6.4.7  
Acoustics  
Sound power during idle mode shall be 3.1 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 mea-  
sured according to Seagate specification 30553-001. There will not be any tones more than 24 dB above the  
masking noise on any drive.  
6.4.8  
Electromagnetic susceptibility  
See Section 2.1.1.1.  
Savvio 15K.1 FC Product Manual, Rev. B  
35  
       
6.5  
Mechanical specifications  
Height:  
Width:  
Depth:  
Weight:  
0.583 in  
14.8 mm  
2.755 in  
69.98 mm  
3.945 in  
100.2 mm  
0.50 pounds  
0.227 kilograms  
4.340 +/- .010  
3.945 +/- .008  
.379 +/- .010  
3.016 +/- .010  
.276  
.118 +/- .008  
.583 +/- .014  
1.447  
.158  
Measurements shown in inches  
.160 +/- .010  
2.430 +/- .010  
3.016 +/- .010  
.379 +/- .010  
2.755 +/- .008  
Figure 12. Drive dimensions (inches)  
36  
Savvio 15K.1 FC Product Manual, Rev. B  
   
7.0  
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 SAS 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 7.4)  
• Media Pre-Scan (see Section 7.5)  
• Deferred Auto-Reallocation (see Section 7.6)  
• Idle Read After Write (see Section 7.7)  
Note.The read error rates and specified storage capacities are not dependent on host (initiator) defect man-  
agement routines.  
7.1  
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 SCSI Commands Reference Man-  
ual. Also, more information on the drive Error Recovery philosophy is presented in the Fibre Channel Interface  
Manual.  
7.2  
Drive error recovery procedures  
When an error occurs during drive operation, the drive, if programmed to do so, performs error recovery proce-  
dures 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 sev-  
eral SCSI commands described in the SCSI Commands Reference 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.  
Savvio 15K.1 FC Product Manual, Rev. B  
37  
         
The drive firmware error recovery algorithms consists of 11 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 4 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 recov-  
ery 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.  
Table 4:  
Read and write retry count maximum recovery times  
Maximum recovery time per  
LBA (cumulative, msec)  
Maximum recovery time per  
LBA (cumulative, msec)  
1
1
Read retry count  
Write retry count  
0
51.87  
0
23.94  
35.91  
55.86  
67.83  
119.79  
147.72  
1
59.85  
1
2
203.49  
2
3
219.45  
3
4
253.11  
4
5
279.35  
5 (default)  
6
311.27  
7
395.12  
8
463.12  
9
495.04  
10  
530.95  
11 (default)  
1,282.97  
[1] Setting these retry counts to a value below the default setting could result in degradation of the unrecov-  
ered error rate. For example, suppose the read/write recovery page has the RC bit = 0, the read retry  
count set to 4, and the recovery time limit set to 450. A 4-block read command can take up to 401 msec  
recovery time for each block and a maximum of 450 msec recovery for all four blocks. If either of these  
limits is reached and a block has not yet been recovered, the command will end with Check Condition sta-  
tus and an unrecoverable read error will be reported.  
7.3  
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.  
38  
Savvio 15K.1 FC Product Manual, Rev. B  
 
7.4  
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 activ-  
ity.  
Since the background scan functions are only done during idle periods, BMS causes a negligible impact to sys-  
tem 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.  
7.5  
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 disc.  
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 dis-  
able Pre-Scan to restore full performance to the system.  
7.6  
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 oper-  
ations performed by the drive. When a write command is received for an LBA marked for DAR, the auto-reallo-  
cation 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 unread-  
able 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.  
Savvio 15K.1 FC Product Manual, Rev. B  
39  
     
7.7  
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.  
40  
Savvio 15K.1 FC Product Manual, Rev. B  
 
8.0  
Installation  
Savvio disc 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. See Section 9.5 for additional information about this connector.  
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 arbi-  
trated loop physical address (AL_PA). There are 125 AL_PAs available (see Table 23). If you set the AL_PA on  
the backpanel to any value other 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 selec-  
tion 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 auto-  
matically.  
Loop initialization is the process used to verify or obtain an address. The loop initialization process is per-  
formed 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 logical blocks. You need to reformat the drive only if you want to select a different logical block size.  
8.1  
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 pre-  
ferred mounting orientations.  
8.2  
Cooling  
The host enclosure must dissipate heat from the drive. You should confirm that the host enclosure is designed  
to ensure that the drive operates within the temperature measurement guidelines described in Section 6.4.1. In  
some cases, forced airflow may be required to keep temperatures at or below the temperatures specified in  
Section 6.4.1.  
If forced air is necessary, possible air-flow patterns are shown in Figure 13. The air-flow patterns are created  
by fans either forcing or drawing air as shown in the illustrations. Conduction, convection, or other forced air-  
flow patterns are acceptable as long as the temperature measurement guidelines of Section 6.4.1 are met.  
Savvio 15K.1 FC Product Manual, Rev. B  
41  
                                           
Above unit  
Under unit  
Note. Air flows in the direction shown (back to front)  
or in reverse direction (front to back)  
Above unit  
Under unit  
Note. Air flows in the direction shown or  
in reverse direction (side to side)  
Figure 13. Air flow  
8.3  
Drive mounting  
Use M3 x .5 metric screws to mount the drive using either side, bottom, or end mounting holes. Select a screw  
length that results in a minimum thread engagement of 0.12 inches when using the side-mounting holes or a  
minimum thread engagement of 0.10 inches when using the bottom or end mounting holes. Use a maximum  
torque of 4.5 +/- .45 in lbs. If the screws are torques above the specified values, threads could be stripped.  
Note. Before mounting the drive in any kind of adapter frame, verify that the drive can meet the shock and  
vibration specifications while mounted in such an adapter frame.  
8.4  
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 electri-  
cally 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 mount-  
ing 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.  
42  
Savvio 15K.1 FC Product Manual, Rev. B  
                       
9.0  
Interface requirements  
This section partially describes the interface requirements as implemented on Savvio drives. Additional infor-  
mation is provided in the Fibre Channel Interface Manual (part number 100293070).  
9.1  
FC-AL features  
This section lists the Fibre Channel-specific features supported by Savvio drives.  
9.1.1  
Fibre Channel link service frames  
Table 5 lists the link services supported by Savvio drives.  
Table 5:  
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)  
Savvio 15K.1 FC Product Manual, Rev. B  
43  
                                                   
9.1.2  
Fibre Channel task management functions  
Table 6 lists the Fibre Channel SCSI Fibre Channel Protocol (FC SCSI FCP) task management functions sup-  
ported.  
Table 6:  
Fibre Channel SCSI FCP task management functions  
Supported  
Task name  
Terminate task  
Clear ACA  
No  
No  
Target reset  
Clear task set  
Abort task set  
Yes  
Yes  
Yes  
9.1.3  
Fibre Channel task management responses  
Table 7 lists the FC SCSI FCP response codes returned for task management functions supported.  
Table 7:  
FC SCSI FCP response codes  
Function name  
Response code  
Function complete  
Function not supported  
Function reject  
00  
04  
05  
44  
Savvio 15K.1 FC Product Manual, Rev. B  
                         
9.1.4  
Fibre Channel port login  
Table 8 identifies the required content of the N_Port Login (PLOGI) payload from an initiator.  
Table 8:  
Bytes  
N_Port login (PLOGI) payload  
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  
Other bits  
10 or 11 causes the login to be rejected. Other values are accepted.  
XXX  
CS  
OS  
Concurrent sequences  
Must be a value greater than 0.  
Must be a value greater than 0.  
Open sequences per exchange  
Savvio 15K.1 FC Product Manual, Rev. B  
45  
                                                                   
9.1.5  
Fibre Channel port login accept  
Table 9 identifies the N_Port Login access payload values.  
Table 9:  
Bytes  
N_Port Login Accept (ACC) payload  
0-15  
02  
00  
00  
UI  
00  
01  
UI  
00  
F4  
UI  
09  
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  
00  
2P  
CC  
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  
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.  
9.1.6  
Fibre Channel Process Login  
Table 10 lists the process login payload data.  
Table 10:  
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  
XX  
Indicates fields that are not used.  
46  
Savvio 15K.1 FC Product Manual, Rev. B  
                               
9.1.7  
Fibre Channel Process Login Accept  
Table 11 lists Savvio process login accept payload data.  
Table 11:  
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  
9.1.8  
Fibre Channel fabric login  
Table 12 lists the fabric login payload from the drive.  
Table 12:  
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  
UI  
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  
08  
00  
00  
00  
00  
40  
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.  
Savvio 15K.1 FC Product Manual, Rev. B  
47  
                       
9.1.9  
Fibre Channel fabric accept login  
Table 13 lists the required content of the Fabric Login Accept (ACC) payload from the fabric.  
Table 13:  
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 during 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  
48  
Savvio 15K.1 FC Product Manual, Rev. B  
                                                   
9.1.10  
Fibre Channel Arbitrated Loop options  
Table 14 lists the FC-AL options supported by Savvio drives.  
Table 14:  
Option  
FC-AL options supported  
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  
Yes  
Yes  
Loop Position Report  
9.2  
Dual port support  
Savvio 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 tak-  
ing a soft address to prevent an address conflict.  
Subject to buffer availability, the Savvio 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.  
Savvio 15K.1 FC Product Manual, Rev. B  
49  
                     
9.3  
SCSI commands supported  
Table 15 lists the SCSI commands supported by Savvio drives.  
Table 15:  
Supported commands  
Command code  
Supported [4] Command name  
00h  
01h  
03h  
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
N
N
Y
N
Y
Y
Y
Test unit ready  
Rezero unit  
Request sense  
Extended sense  
Field pointer bytes  
Actual retry count bytes  
04h  
07h  
08h  
0Ah  
0Bh  
12h  
Format unit [1]  
Reassign blocks  
Read  
Write  
Seek  
Inquiry  
Vital product data page (00h)  
Unit serial number page (80h)  
Implemented operating def. page (81h)  
Device Identification page (83h)  
Firmware numbers page (C0h)  
Date code page (C1h)  
Jumper settings page (C2h)  
Device Behavior page (C3h)  
Mode select (same pages as Mode Sense command shown below) [3]  
Reserve  
15h  
16h  
3rd party reserved  
Extent reservation  
17h  
18h  
1Ah  
Release  
Copy  
Mode sense  
Unit attention page (00h)  
Error recovery page (01h)  
50  
Savvio 15K.1 FC Product Manual, Rev. B  
                                                         
Table 15:  
Supported commands (continued)  
Command code  
Supported [4] Command name  
Disconnect/reconnect control (page 02h)  
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
N
Y
Y
Y
N
Y
Y
Y
Y
N
Format page (03h)  
Rigid disc drive geometry page (04h)  
Verify error recovery page (07h)  
Caching parameters page (08h)  
Control mode page (0Ah)  
Fibre Channel Interface Control page (19h)  
Power control page (1Ah)  
Information exceptions control page (1Ch)  
Start unit/stop unit  
1Bh  
1Ch  
Receive diagnostic results  
Supported diagnostics pages  
Translate page  
Enclosure services page  
Send diagnostics page  
Supported diagnostics pages  
Translate page  
1Dh  
25h  
28h  
Read capacity  
Read extended  
Disable page out  
Force unit access  
Relative address  
2Ah  
Write extended  
Disable page out  
Force unit access  
Relative address  
2Bh  
2Eh  
Seek extended  
Write and verify  
Disable page out  
Byte check  
Relative address  
Savvio 15K.1 FC Product Manual, Rev. B  
51  
                                               
Table 15:  
Supported commands (continued)  
Command code  
Supported [4] Command name  
2Fh  
Y
Y
Y
N
N
N
N
N
N
Y
N
Y
N
N
Y
Y
Y
N
Y
N
Y
Y
Y
Y
Y
Y
Y
Y
N
Y
N
Verify  
Disable page out  
Byte check  
Relative address  
30h  
31h  
32h  
33h  
34h  
35h  
36h  
37h  
39h  
3Ah  
3Bh  
Search data high  
Search data equal  
Search data low  
Set limits  
Prefetch  
Synchronize cache  
Lock-unlock-cache  
Read defect data  
Compare  
Copy and verify  
Write buffer  
Write combined header and data mode (0)  
Write data mode (2)  
Download microcode mode (4)  
Download microcode and save modes (5)  
Download microcode with offsets mode (6)  
Download microcode with offsets and save mode (7)  
Firmware download option [2]  
Read buffer  
3Ch  
Read combined header and data mode (0)  
Read data mode (2)  
Read descriptor mode (3)  
Read long  
3Eh  
3Fh  
40h  
41h  
Write long  
Change definition  
Write same  
PBdata  
52  
Savvio 15K.1 FC Product Manual, Rev. B  
                                                             
Table 15:  
Supported commands (continued)  
Command code  
Supported [4] Command name  
N
N
Y
Y
Y
Y
Y
N
Y
Y
Y
N
Y
Y
Y
N
N
N
N
N
Y
Y
Y
N
Y
N
Y
N
A
A
N
LBdata  
42-4Bh  
4Ch  
Not used  
Log Select  
4Dh  
Log Sense  
Support Log page (00h)  
Write Error Counter page (02h)  
Read Error Counter page (03h)  
Read Reverse Error Counter page (04h)  
Verify Error Counter page (05h)  
Non-medium Error Counter page (06h)  
Temperature page (0Dh)  
Application Client page (0Fh)  
Self Test Results page (10h)  
Cache Statistics Counter page (37h)  
Factory Log page (3Eh)  
Not used  
4E-4Fh  
50h  
XD write  
51h  
XP write  
52h  
XD read  
53-54h  
55h  
Not used  
Mode Select (10) [3]  
Reserved (10)  
56h  
3rd party reserve  
Extent reservation  
Released (10)  
57h  
58-59h  
5Ah  
Not used  
Mode Sense (10) [3]  
Not used  
5B-5Dh  
5E  
Persistent reserve in  
Persistent reserve out  
Not used  
5F  
60-7Fh  
Savvio 15K.1 FC Product Manual, Rev. B  
53  
                       
Table 15:  
Supported commands (continued)  
Command code  
80h  
Supported [4] Command name  
N
N
N
N
Y
N
N
XD write extended  
Rebuild  
81h  
82h  
Regenerate  
Not used  
83-8Fh  
A0h  
Report LUNS  
Not used  
C0-DFh  
EO-FFh  
Not used  
[1] Savvio drives can format to any multiple of four bytes per logical block in the range 512 to 528 bytes.  
[2] Warning. Power loss during flash programming can result in firmware corruption. This usually makes the  
drive inoperable.  
[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.  
54  
Savvio 15K.1 FC Product Manual, Rev. B  
     
9.3.1  
Inquiry data  
Table 16 lists the Inquiry command data that the drive should return to the initiator per the format given in the  
Fibre Channel Interface Manual.  
Table 16:  
Bytes  
Savvio inquiry data  
Data (hex)  
0-15  
00  
[53  
R#  
00  
00  
00  
00  
00  
54  
R#  
00  
00  
00  
43  
03** 12  
8B  
33  
S#  
00  
00  
00  
79  
53  
74  
00  
34  
S#  
00  
00  
00  
72  
65  
73  
PP  
35  
S#  
00  
00  
00  
69  
61  
20  
0A  
31  
S#  
00  
00  
00  
67  
67  
72  
53  
46  
S#  
00  
00  
00  
68  
61  
65  
45  
43  
S#  
00  
00  
00  
74  
74  
73  
41  
20]  
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  
16-31  
32-47  
48-63  
64-79  
80-95  
96-111  
112-127  
128-143  
39  
R#  
00  
00  
00  
6F  
37  
R#  
00  
00  
00  
70  
20  
68  
32* *Copyright  
30* 30* 37*  
72 69 67  
20  
20  
notice  
*
Copyright year (changes with actual year).  
**  
02 = SCSI-2 implemented with some SCSI-3 features (default).  
03 = SCSI-3 implemented.  
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. The table above shows the hex values for Model ST973451FC.  
Refer to the values below for the values of bytes 18 through 26 of you particular model:  
ST973451FC  
ST936751FC  
53 54 39 37 33 34 35 31 46 43 20  
53 54 39 33 36 37 35 31 46 43 20  
Savvio 15K.1 FC Product Manual, Rev. B  
55  
   
9.4  
Miscellaneous operating features and conditions  
Table 17 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 17:  
Miscellaneous features  
Supported  
Feature or condition  
Y
N
N
N
Y
N
Y
Y
Y
Y
N
Y
FC-AL selective 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 18:  
Miscellaneous status  
Status  
Supported  
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  
56  
Savvio 15K.1 FC Product Manual, Rev. B  
                                             
9.5  
FC-AL physical interface  
Figure 14 shows the location of the J1 Fibre Channel single connection attachment (FC-SCA). Figure 16 pro-  
vides 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..  
Figure 14. Physical interface  
9.5.1  
Physical characteristics  
This section defines physical interface connector.  
9.5.1.1  
Physical description  
FIbre Channel drives may be connected in a loop together or with other compatible FC-AL devices. A maxi-  
mum 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 15 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 15. Port bypass circuit physical interconnect  
Savvio 15K.1 FC Product Manual, Rev. B  
57  
                       
9.5.2  
Connector requirements  
Table 19:  
Recommended mating SCA part numbers  
Part description  
Positions  
Part number  
787317-1  
Features  
With polarization  
AMP Vertical (SCA sequence)  
40  
40  
40  
40  
With polarization  
With polarization  
With polarization  
Berg  
71781  
Methode  
Molex  
512-220-91-101N  
717431040  
The FC-AL SCA device connector is illustrated in Figure 16.  
1.618 .003 in  
(41.1 0.08 mm)  
Pin 20  
Pin 40  
Pin 1  
0.197 .003 in  
(5.00 .08 mm)  
2 places  
Pin 21  
.64 in  
(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  
(6.71+0.18 mm)  
(–0.25 mm)  
1.492 .009 in  
(37.90 0.24 mm)  
0.024 in  
(0.60 mm)  
min.  
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 16. FC-AL SCA device connector dimensions  
9.5.3  
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.  
58  
Savvio 15K.1 FC Product Manual, Rev. B  
                           
9.5.4  
Pin descriptions  
This section provides a pin-out of the FC-SCA and a description of the functions provided by the pins.  
Table 20:  
FC-SCA pin descriptions  
Pin Signal name  
Signal type  
Pin  
21  
Signal name  
12 Volts charge  
Ground  
Signal type  
1*  
2*  
3*  
4*  
5*  
6*  
7*  
8*  
9*  
-EN bypass port A  
Low Voltage TTL output  
12 Volts  
22  
12 Volts  
23  
Ground  
12 Volts  
24*  
25*  
26  
+Port A_in  
-Port A_in  
Ground  
Diff. PECL input pair  
Diff. PECL input pair  
Diff PECL output pair  
Diff PECL 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  
[2]  
10* Start_2  
TTL input  
30*  
31*  
32  
+Port A_out  
-Port A_out  
Ground  
11*  
-EN bypass port B  
Low Voltage TTL output  
TTL input/output  
TTL input/output  
TTL input  
12* SEL_6  
13* SEL_5  
33*  
34*  
35  
+Port B_out  
-Port B_out  
Ground  
14* SEL_4  
15* SEL_3  
TTL input/output  
Open collector out  
TTL input  
16* Fault LED out  
17* DEV_CTRL_CODE_2  
18* DEV_CTRL_CODE_1  
19* 5 Volts  
36  
SEL_2  
TTL input/output  
TTL input/output  
TTL input/output  
TTL input  
[2]  
[2]  
37  
SEL_1  
TTL input  
38  
SEL_0  
[2  
39  
DEV_CTRL_CODE_0  
5 Volts charge  
20* 5 Volts  
40  
*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 common ground.  
[2] Pins 9, 10, 17, 18, and 39 are option select pins and are tied high by the drive circuitry. The preferred elec-  
trical connection 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.  
Savvio 15K.1 FC Product Manual, Rev. B  
59  
   
9.5.5  
FC-AL transmitters and receivers  
A typical FC-AL differential copper transmitter and receiver pair is shown in Figure 17. The receiver is required  
to provide the AC coupling to eliminate ground shift noise.  
.01  
TX  
Transmitter 100  
TY  
RX  
RY  
100 Differential  
Transfer Medium  
100  
Receiver  
.01  
Figure 17. FC-AL transmitters and receivers  
Savvio drives use 100 ohm termination which makes it compatible with backplanes designed for 1, 2, or 4 Gbit  
Fibre Channel transfer rates. Previous generations of Seagate FC products used 150 ohm impedance for  
operation in host systems designed to operate in 1 or 2 Gbit transfer rate environments.  
9.5.6  
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 pos-  
sible 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.  
9.5.7  
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.  
60  
Savvio 15K.1 FC Product Manual, Rev. B  
                                     
9.5.8  
Active LED Out  
The Active LED Out signal is driven by the drive as indicated in Table 21.  
Table 21:  
Active LED Out conditions  
Normal command activity  
LED status  
Spun down and no activity  
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.  
9.5.9  
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 disc 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 con-  
nector J1 is driven low by the disc drive. A pull down resistor, 1K, located with the PBC should be used to  
insure the bypass is enabled if the disc 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 disc drive that will enable bypass include:  
• Transmitter/receiver wrap test failure  
• Loss of receive clock  
• Loss of transmission clock  
• Drive interface hardware error  
9.5.10  
Motor start controls  
The drive’s motor is started according to the Start_1 and Start_2 signals described in Table 22. The state of  
these signals can be wired into the backplane socket or driven by logic on the backplane.  
Table 22:  
Motor start control signals  
Case  
Start_2  
Start_1  
Low  
Motor spin function  
1
2
3
Low  
High  
Low  
Motor spins up at DC power on.  
Low  
Motor spins up only when SCSI Start command is received.  
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.  
Savvio 15K.1 FC Product Manual, Rev. B  
61  
                         
Table 22:  
Case  
4
Motor start control signals  
Start_2  
High  
Start_1  
Motor spin function  
High  
The drive will not spin up.  
9.5.11  
SEL_6 through SEL_0 ID lines  
The SEL_6 through SEL_0 ID lines determine drive address, and, optionally, for an Enclosure Services Inter-  
face. When the Parallel ESI line is high, the enclosure backpanel must provide address information on the SEL  
line. Refer to table 23 for a 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 25  
on page 64.  
Note. Table 23 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 descrip-  
tion of ESI operation.  
9.5.11.1  
Parallel 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 informa-  
tion on the SEL lines. A low level indicates the drive is attempting an ESI transfer. The enclosure may not sup-  
port 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.  
62  
Savvio 15K.1 FC Product Manual, Rev. B  
   
Table 23:  
Arbitrated loop physical address (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  
00  
01  
02  
03  
04  
05  
06  
07  
08  
09  
0A  
0B  
0C  
0D  
0E  
0F  
10  
11  
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  
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  
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  
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  
4D  
4C  
4B  
4A  
49  
47  
46  
45  
43  
3c  
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  
86  
87  
88  
89  
90  
91  
92  
93  
94  
95  
3A  
39  
36  
35  
34  
33  
32  
31  
2E  
2D  
2C  
2B  
2A  
29  
27  
26  
25  
23  
1F  
1E  
1D  
1B  
18  
96  
97  
98  
99  
100  
101  
102  
103  
104  
105  
106  
107  
108  
109  
110  
111  
112  
113  
114  
115  
116  
117  
118  
12  
13  
14  
15  
16  
17  
18  
19  
1A  
1B  
1C  
1D  
1E  
1F  
20  
Savvio 15K.1 FC Product Manual, Rev. B  
63  
9.5.12  
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 24:  
Device control code values  
2 (pin 17)  
1 (pin 18)  
0 (pin 39)  
Definition  
0
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.  
0
1
1
0
0
1
1
Reserved.  
Reserved.  
Reserved.  
2.125 GHz operation on both ports.  
1.0625 GHz operation on both ports.  
9.6  
Signal characteristics  
This section describes the electrical signal characteristics of the drive’s input and output signals. See Table 20  
on page 59 for signal type and signal name information.  
9.6.1  
TTL input characteristics  
Table 25 provides the TTL characteristics.  
Table 25:  
State  
TTL characteristics  
Voltage  
Current  
Input high  
Input low  
1.9 < VIH < 5.5V  
-0.5V < VIL < 0.9V  
2.4 < VOH < 5.25V  
VOL < 0.5V  
IIH = ±500nA max.  
IOL = ±500nA max.  
IOH < -3mA  
Output high (-EN Bypass A, B)  
Output low (-EN Bypass A, B)  
Output high (-Parallel ESI)  
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  
Output high (all other outputs)  
2.4 < VOH < 0.9 VCC  
VOH > 0.9VCC  
IOH < -1.6mA  
IOH < -500µA  
Output low (all other outputs)  
0 < VOL < .45V  
IOL < 1.6mA  
64  
Savvio 15K.1 FC Product Manual, Rev. B  
                     
9.6.2  
Differential PECL output  
The serial PECL output signal voltage characteristics are provided in Table 26. 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 26:  
Differential PECL output characteristics  
Parameter  
Description  
Notes  
Serial output voltage swing  
600 < Vout < 1300 mV  
Centered at 1.32V  
Figure 18 provides the data output valid eye diagram relative to the bit cell time.  
941 ps  
800 ps  
Figure 18. Transmit eye diagram  
9.6.3  
Differential PECL input  
The serial PECL input signal voltage characteristics are provided in Table 27.  
Table 27:  
Differential PECL input characteristics  
Parameter  
Description  
Notes  
Serial input voltage swing  
200 < Vin < 1.300 mV  
AC coupled  
Figure 19 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 19. Receive eye diagram  
Savvio 15K.1 FC Product Manual, Rev. B  
65  
                 
66  
Savvio 15K.1 FC Product Manual, Rev. B  
10.0  
Seagate Technology support services  
Internet  
For information regarding Seagate products and services, visit www.seagate.com. Worldwide support is  
available 24 hours daily by email for your questions.  
Presales Support:  
Technical Support:  
Warranty Support:  
mySeagate  
my.seagate.com is the industry's first Web portal designed specifically for OEMs and distributors. It provides  
self-service access to critical applications, personalized content and the tools that allow our partners to  
manage their Seagate account functions. Submit pricing requests, orders and returns through a single,  
password-protected Web interface-anytime, anywhere in the world.  
spp.seagate.com  
spp.seagate.com supports Seagate resellers with product information, program benefits and sales tools. You  
may register for customized communications that are not available on the web. These communications contain  
product launch, EOL, pricing, promotions and other channel-related information. To learn more about the  
benefits or to register, go to spp.seagate.com, any time, from anywhere in the world.  
Seagate Service Centers  
Presales Support  
Our Presales Support staff can help you determine which Seagate products are best suited for your specific  
application or computer system, as well as product availability and compatibility.  
Technical Support  
Seagate technical support is available to assist you online at support.seagate.com or through one of our call  
centers. Have your system configuration information and your “ST” model number available.  
SeaTDD(+1-405-324-3655) is a telecommunications device for the deaf (TDD). You can send questions or  
comments 24 hours daily and exchange messages with a technical support specialist during normal business  
hours for the call center in your region.  
Savvio 15K.1 FC Product Manual, Rev. B  
67  
   
Customer Service Operations  
Warranty Service  
Seagate offers worldwide customer support for Seagate products. Seagate distributors, OEMs and other direct  
customers should contact their Seagate Customer Service Operations (CSO) representative for warranty-  
related issues. Resellers or end users of drive products should contact their place of purchase or Seagate  
warranty service for assistance. Have your serial number and model or part number available.  
Data Recovery Services  
Seagate offers data recovery services for all formats and all brands of storage media. Our data recovery  
services labs are currently located throughout the world. . Additional information, including an online request  
form and data loss prevention resources, is available at http://services.seagate.com/index.aspx  
Authorized Service Centers  
Seagate Service Centers are available on a global basis for the return of defective products. Contact your  
customer support representative for the location nearest you.  
USA/Canada/Latin America support services  
For an extensive list of telephone numbers to technical support, presales and warranty service in USA/  
Canada/Latin America, including business hours, go to the "Contact Us" page on www.seagate.com.  
Global Customer Support  
Presales, Technical, and Warranty Support  
Call Center  
USA, Canada,  
and Mexico  
Toll-free  
Direct dial  
1-800-SEAGATE  
+1-405-324-4700  
Data Recovery Services  
Call Center  
Toll-free  
Direct dial  
FAX  
USA, Canada,  
and Mexico  
1-800-475-01435  
+1-905-474-2162  
1-800-475-0158  
+1-905-474-2459  
Europe, the Middle East and Africa Support Services  
For an extensive list of telephone numbers to technical support, presales and warranty service in Europe, the  
Middle East and Africa, go to the "Contact Us" page on www.seagate.com.  
Asia/Pacific Support Services  
For an extensive list of telephone numbers to technical support, presales and warranty service in Asia/Pacific,  
go to the "Contact Us" page on www.seagate.com.  
68  
Savvio 15K.1 FC Product Manual, Rev. B  
BB 45, 48  
BB-Credit 45, 48  
buffer  
Index  
data 8  
space 13  
busy status 56  
bypass circuit 17  
Byte check command 51, 52  
Numerics  
1 Gbit 60  
12 volt  
pins 60  
2 Gbit 60  
3rd party reserve command 53  
4 Gbit 60  
5 volt pins 60  
C
cache operation 13  
Caching parameters page (08h) command 51  
caching write data 13  
Canadian Department of Communications 3  
capacity  
A
Abort Sequence (ABTS) 43  
abort task set function 44  
AC coupling 60  
AC power requirements 23  
ACA active status 56  
ACA active, faulted initiator status 56  
Accept (ACC) 43  
unformatted 11  
CC 46, 47  
CF 45, 48  
Change definition command 52  
character sync 17  
charge pins 60  
acoustics 35  
check condition status 56  
Class 3 parameters 45, 48  
class B limit 3  
active LED Out signal 61  
Actual retry count bytes command 50  
actuator  
Class valid 45, 48  
clear ACA function 44  
clear task set function 44  
commands supported 50  
Common features 45, 48  
Company ID 46, 47  
Compare command 52  
Concurrent sequences 45  
condensation 31  
assembly design 7  
adaptive caching 56  
Address Discovery (ADISC) 43  
addresses 57  
air cleanliness 34  
air flow  
illustrated 42  
Alternate credit model 45, 48  
altitude 31  
ambient 31  
ANSI documents  
fibre channel 5  
SCSI 5  
arbitrated loop physical address (AL_PA) 41  
arbitration 41  
asynchronous event notification 56  
audible noise 3  
auto negotiation of link rate 64  
auto write and read reallocation  
programmable 8  
automatic contingent allegiance 56  
average idle current 23, 24  
average rotational latency 11  
condition met/good status 56  
connector  
illustrated 58  
requirements 58  
continuous vibration 34  
Continuously increasing offset 45, 48  
control code values 64  
Control mode page (0Ah) command 51  
cooling 41  
Copy and verify command 52  
Copy command 50  
CRC 17  
error 16  
Current profiles 25  
customer service 22  
B
backpanel 58  
backplane 61  
D
data heads  
read/write 11  
data rate  
basic link service frames 43  
Basic_Accept (BA_ACC) 43  
Basic_Reject (BA_RJT) 43  
Savvio 15K.1 FC Product Manual, Rev. B  
69  
internal 11  
rates 15  
data transfer rate 12  
data valid eye 65  
Error recovery page (01h) command 50  
extended link service  
Date code page command 50  
DC power 58  
frames 43  
reply frames 43  
requirements 23  
Extended sense command 50  
Extent reservation command 53  
external data rate 11  
defect and error management 37  
deferred error handling 56  
description 7  
DEV_CTRL_CODE 64  
Device Behavior page command 50  
device control code values 64  
Device Identification page command 50  
device selection IDs 41  
devices 41  
differential PECL input 65  
Disable page out command 51, 52  
disc rotation speed 11  
Disconnect/reconnect control (page 02h) command  
Download microcode and save modes (5) 52  
Download microcode mode (4) 52  
Download microcode with offsets and save mode (7)  
Download microcode with offsets mode (6) 52  
drive 34  
F
fabric 48  
Fabric Address Notification (FAN) 43  
Fabric Login (FLOGI) 43  
FAN 48  
fault LED out signal 60  
FC-AL  
document 5  
interface 41, 58  
options supported 49  
physical interface 57  
SCA device connector, illustrated 58  
selective reset 56  
FCC rules and regulations 3  
FCP  
for SCSI, document 5  
response codes 44  
drive characteristics 11  
drive ID 41  
drive mounting 42  
drive orientation 41  
drive select 58  
task management functions 44  
FC-PH document 5  
features 8  
interface 43  
Fibre Channel documents 5  
Fibre Channel Interface Control page (19h) 51  
Fibre Channel Interface Manual 1, 3, 5  
Fibre Channel Services 43  
Field pointer bytes command 50  
firmware 8  
drivers and receivers 8  
dual port support 49  
E
electrical  
description of connector 58  
signal characteristics 64  
specifications 23  
corruption 54  
Firmware download option command 52  
Firmware numbers page command 50  
flawed sector reallocation 8  
FLOGI  
received on Port A 47  
received on Port B 47  
Force unit access command 51  
format 41  
electromagnetic compatibility 3  
electromagnetic susceptibility 35  
EMI requirements 3  
enable bypass  
port A 61  
port B 61  
signal 61  
state 17  
Enclosure Services interface 58  
Enclosure services page command 51  
environmental  
Format command execution time 12  
Format page (03h) command 51  
Format unit command 50  
FS 45, 46, 48  
function  
limits 30  
requirements 15  
environmental control 34  
error  
complete, code 00 44  
not supported, code 05 44  
reject, code 04 44  
detection mechanisms, FC 17  
70  
Savvio 15K.1 FC Product Manual, Rev. B  
Lock-unlock-cache command 52  
Log select command 53  
Log sense command 53  
logic power 60  
G
Good status 56  
gradient 31  
ground shift noise 60  
grounding 42  
logical block address 13  
logical block reallocation scheme 8  
logical block size 8, 12  
logical segments 13  
Logout (LOGO) 43  
loop 57, 61  
H
hard assigned arbitrated loop physical address  
(AL_PA) 41  
HDA 42  
disruption 17  
initialization 41  
heads  
loop position  
FC-AL options 49  
loop position report  
read/write data 11  
host equipment 42  
hot plugging the drive 17  
humidity 31  
FC-AL options 49  
LS_RJT 45, 48  
humidity limits 30  
M
I
maintenance 15  
maximum delayed motor start 23, 24  
maximum start current 23, 24  
Mean time between failures 16  
media description 9  
ID and configuration options 8  
Implemented operating def. page command 50  
Information exceptions control page (1Ch) command  
minimum sector interleave 12  
miscellaneous feature support  
Adaptive caching 56  
Initiator control 45  
Inquiry command 50  
inquiry data 55  
Asynchronous event notification 56  
Automatic contingent allegiance 56  
Deferred error handling 56  
FC-AL selective reset 56  
Parameter rounding 56  
Queue tagging 56  
installation 41  
guide 5  
interface 41  
commands supported 50  
description 57  
error rate 15  
Reporting actual retry count 56  
Segmented caching 56  
SMP = 1 in Mode Select command 56  
Synchronized (locked) spindle operation 56  
Zero latency read 56  
errors 16  
illustrated 57  
physical 57  
requirements 43  
intermediate/condition met/good status 56  
intermediate/good status 56  
Intermix 45, 48  
internal data rate 11  
internal defects/errors 37  
internal drive characteristics 11  
miscellaneous status support  
ACA active 56  
ACA active, faulted initiator 56  
Busy 56  
Check condition 56  
Condition met/good 56  
Good 56  
Intermediate/condition met/good 56  
Intermediate/good 56  
Reservation conflict 56  
Task set full 56  
J
Jumper settings page command 50  
jumpers 41  
L
latency  
miscorrected media data 15  
Mode select  
(10) command 53  
command 50  
average rotational 11, 12  
LBdata 53  
Mode sense  
Link Service Reject (LS_RJT) 43  
link services supported 43  
(10) command 53  
Savvio 15K.1 FC Product Manual, Rev. B  
71  
command 50  
monitoring state 17  
motor start  
PECL input 65  
performance characteristics  
detailed 11  
controls 61  
general 12  
mounting 42  
performance degradation 32  
performance highlights 9  
physical damage 34  
physical interface 57  
description 57  
orientations 41  
mounting configuration dimensions 37  
MTBF 9, 15, 16  
physical specifications 23  
PI 46, 47  
N
N_Port Login (PLOGI) 43  
payload 45  
payload values 46  
NN 45, 48  
Node Name 48  
Node name 45  
noise  
pin descriptions 59  
PN 45, 48  
port bypass circuit 17, 57, 61  
Port DISCovery 45  
Port Discovery (PDISC) 43  
port identifier field 46, 47  
port login 45  
accept 46  
Port Name 48  
Port name (initiator’s) 45  
power 60  
audible 3  
noise immunity 25  
non-operating 31, 32, 34  
temperature 31  
non-operating vibration 34  
dissipation 27  
requirements, AC 23  
requirements, DC 23  
sequencing 25  
O
office environment 34  
ohm 60  
old port state  
Power control page (1Ah) command 51  
power distribution 3  
power failure warning 64  
Prefetch command 52  
prefetch/multi-segmented cache control 13  
preventive maintenance 15  
private loop  
FC-AL options 49  
OPEN Full Duplex  
FC-AL options 49  
OPEN half duplex  
FC-AL options 49  
Open sequences per exchange 45  
operating 31, 34  
option configurations 41  
option selection 58  
options 10, 49  
FC-AL options 49  
Proc Assc 45  
Process Accept (ACC) 47  
Process Login (PRLI) 43, 46  
Process Login Accept (ACC) payload 47  
process login payload data 46  
Process Logout (PRLO) 43  
public loop  
P
P_LOGI  
received on Port A 46  
received on Port B 46  
package size 32  
FC-AL options 49  
pull down resistor 61  
Q
package test specification 5  
packaged 32  
queue tagging 56  
parameter rounding 56  
pass-through state 17  
PBC 57, 61  
R
radio interference regulations 3  
Random relative offset 45, 48  
RCD bit 13  
Read buffer command 52  
Read capacity command 51  
Read combined header and data mode (0) 52  
PBdata 52  
PCBA 42  
peak bits per inch 11  
peak operating current 23, 24  
peak-to-peak measurements 25  
72  
Savvio 15K.1 FC Product Manual, Rev. B  
Read command 50  
seek error  
defined 16  
Read data mode (2) 52  
Read defect data command 52  
Read descriptor mode (3) 52  
read error rates 15  
Read extended command 51  
Read Link Status (RLS) 43  
Read long command 52  
read/write data heads 11  
Reassign blocks command 50  
Receive buffer field size 45, 48  
receive buffer field size 46  
Receive diagnostic results command 51  
receive eye  
diagram 65  
receivers 60  
recommended mounting 33  
Recoverable Errors 15  
recovered media data 15  
reference  
rate 15  
Seek extended command 51  
seek performance characteristics 11  
seek time  
average typical 11  
full stroke typical 11  
single track typical 11  
segmented caching 56  
SEL ID 41  
lines 62  
standard feature 8  
Self-Monitoring Analysis and Reporting Technology  
Send diagnostics page command 51  
Sequential delivery 45, 48  
Service Options 48  
Service options 45  
Set limits command 52  
shielding 3  
documents 5  
Regenerate command 54  
Register FC-4 Types (RFT_ID) 43  
Relative address command 51, 52  
relative humidity 31  
shipping 21  
shipping container 31  
shock 31, 32  
and vibration 31  
Release command 50  
Released (10) command 53  
reliability 9  
shock mount 42  
signal  
characteristics 64  
specifications 15  
single-unit shipping pack kit 10  
SMART 9, 17  
reliability and service 16  
repair and return information 22  
reporting actual retry count 56  
Request sense command 50  
reservation conflict status 56  
Reserve command 50  
Reserved (10) command 53  
resonance 31  
SMP = 1 in Mode Select command 56  
SO 45, 48  
spindle brake 8  
Stacked connection req. 45, 48  
standards 3  
Start unit/stop unit command 51  
start/stop time 12  
return information 22  
support services 67  
Supported diagnostics pages command 51  
switches 41  
Synchronize cache command 52  
synchronized spindle  
operation 56  
Rezero unit command 50  
Rigid disc drive geometry page  
command 51  
rotation speed 11  
running disparity 17  
system chassis 42  
S
T
safety 3  
SCA part numbers 58  
SCSI Commands Reference Manual 5  
SCSI interface  
target reset function 44  
task management functions 44  
Abort task set 44  
commands supported 50  
Search data  
Clear ACA 44  
Clear task set 44  
equal command 52  
high command 52  
low command 52  
Target reset 44  
terminate task 44  
task management response codes 44  
Function complete 00 44  
Seek command 50  
Savvio 15K.1 FC Product Manual, Rev. B  
73  
Function not supported 05 44  
Function reject 04 44  
task set full status 56  
technical support services 67  
temperature 30  
XD write extended command 54  
XID reassign 45  
XP write 53  
Z
limits 30  
non-operating 31  
regulation 3  
zero latency read 56  
zone bit recording (ZBR) 8  
See also cooling  
terminate task function 44  
termination 60  
terminators 41  
Test unit ready command 50  
Third-party Process Logout (TRPLO) 43  
tracks per inch 11  
tracks per surface 11  
Translate page command 51  
transmit eye diagram 65  
transmitters 60  
transporting the drive 21  
TTL input characteristics 64  
U
UI 46, 47  
unformatted 9  
unique identifier 46, 47  
Unit attention page (00h) command 50  
Unit serial number page command 50  
Unrecoverable Errors 16  
unrecovered media data 15  
V
Valid version level 45, 48  
Verify command 52  
Verify error recovery page (07h) command 51  
vibration 31, 34  
Vital product data page command 50  
W
warranty 21  
word sync 17  
Write and verify command 51  
Write buffer command 52  
Write combined header and data mode (0) 52  
Write command 50  
Write data mode (2) 52  
Write extended command 51  
Write long command 52  
Write same command 52  
X
XD read 53  
XD write 53  
74  
Savvio 15K.1 FC Product Manual, Rev. B  
Seagate Technology LLC  
920 Disc Drive, Scotts Valley, California 95066-4544, USA  
Publication Number: 100384763, Rev. B, Printed in USA  

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