Seagate SAVVIO ST9450304SS User Manual

Product Manual  
®
Savvio 10K.4 SAS  
Standard Models  
Self-Encrypting Drive Models  
ST9600204SS  
ST9450404SS  
ST9600104SS  
ST9450304SS  
100539221  
Rev. A  
December 2009  
Contents  
6.1  
PowerChoiceTM power management. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20  
6.5  
Savvio 10K.4 SAS Product Manual, Rev. A  
i
ii  
Savvio 10K.4 SAS Product Manual, Rev. A  
iv  
Savvio 10K.4 SAS Product Manual, Rev. A  
List of Figures  
Savvio 10K.4 SAS Product Manual, Rev. A  
1
1.0  
Scope  
This manual describes Seagate Technology® LLC, Savvio® 10K.4 SAS (Serial Attached SCSI) disc drives.  
Savvio drives support the SAS Protocol specifications to the extent described in this manual. The SAS Inter-  
face Manual (part number 100293071) describes the general SAS characteristics of this and other Seagate  
SAS drives. The Self-Encrypting Drive Reference Manual, part number 100515636, describes the interface,  
general operation, and security features available on Self-Encrypting Drive models.  
Note. Previous generations of Seagate Self-Encrypting Drive models were called Full Disk Encryption  
(FDE) models before a differentiation between drive-based encryption and other forms of encryp-  
tion was necessary.  
Product data communicated in this manual is specific only to the model numbers listed in this manual. The data  
listed in this manual may not be predictive of future generation specifications or requirements. If you are  
designing a system which will use one of the models listed or future generation products and need further  
assistance, please contact your Field Applications Engineer (FAE) or our global support services group as  
shown in Section 11.0.  
Unless otherwise stated, the information in this manual applies to standard and Self-Encrypting Drive models.  
Model Number  
ST9600204SS  
ST9450404SS  
ST9600104SS  
ST9450304SS  
Self-Encrypting Drive (SED)  
No  
No  
Yes  
Yes  
Savvio 10K.4 SAS Product Manual, Rev. A  
1
   
2.0  
Applicable standards and reference documentation  
The drives documented in this manual have been developed as system peripherals to the highest standards of  
design and construction. The drives depend on host equipment to provide adequate power and environment  
for optimum performance and compliance with applicable industry and governmental regulations. Special  
attention must be given in the areas of safety, power distribution, shielding, audible noise control, and temper-  
ature regulation. In particular, the drives must be securely mounted to guarantee the specified performance  
characteristics. Mounting by bottom holes must meet the requirements of Section 9.3.  
2.1  
Standards  
The Savvio family complies with Seagate standards as noted in the appropriate sections of this manual and the  
Seagate SAS Interface Manual, part number 100293071.  
The drives are recognized in accordance with UL 60950-1 and CSA 60950-1 as tested by UL and EN60950-1  
as tested by TUV.  
The security features of Self-Encrypting Drive models are based on the “TCG Storage Architecture Core Spec-  
ification” and the “TCG Storage Workgroup Security Subsystem Class: Enterprise_A” specification with addi-  
tional vendor-unique features as noted inthis product manual.  
2.1.1  
Electromagnetic compatibility  
The drive, as delivered, is designed for system integration and installation into a suitable enclosure prior to  
use. The drive is supplied as a subassembly and is not subject to Subpart B of Part 15 of the FCC Rules and  
Regulations nor the Radio Interference Regulations of the Canadian Department of Communications.  
The design characteristics of the drive serve to minimize radiation when installed in an enclosure that provides  
reasonable shielding. The drive is capable of meeting the Class B limits of the FCC Rules and Regulations of  
the Canadian Department of Communications when properly packaged; however, it is the user’s responsibility  
to assure that the drive meets the appropriate EMI requirements in their system. Shielded I/O cables may be  
required if the enclosure does not provide adequate shielding. If the I/O cables are external to the enclosure,  
shielded cables should be used, with the shields grounded to the enclosure and to the host controller.  
2.1.1.1  
Electromagnetic susceptibility  
As a component assembly, the drive is not required to meet any susceptibility performance requirements. It is  
the responsibility of those integrating the drive within their systems to perform those tests required and design  
their system to ensure that equipment operating in the same system as the drive or external to the system  
does not adversely affect the performance of the drive. See Tables 2 and 3, DC power requirements.  
2
Savvio 10K.4 SAS Product Manual, Rev. A  
                                 
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  
• Keyboard  
• Monitor/display  
• Printer  
• Mouse  
Although the test system with this Seagate model complies with the directives/standards, we cannot guarantee  
that all systems will comply. The computer manufacturer or system integrator shall confirm EMC compliance  
and provide the appropriate marking for their product.  
Electromagnetic compliance for the European Union  
If this model has the CE Marking it complies with the European Union requirements of the Electromagnetic  
Compatibility Directive 2004/108/EC as put into place on 20 July 2007.  
Australian C-Tick  
If this model has the C-Tick Marking it complies with the Australia/New Zealand Standard AS/NZ CISPR22 and  
meets the Electromagnetic Compatibility (EMC) Framework requirements of Australia’s Spectrum Manage-  
ment Agency (SMA).  
Korean KCC  
If these drives have the Korean Communications Commission (KCC) logo, they comply with paragraph 1 of  
Article 11 of the Electromagnetic Compatibility control Regulation and meet the Electromagnetic Compatibility  
(EMC) Framework requirements of the Radio Research Laboratory (RRL) Communications Commission,  
Republic of Korea.  
These drives have been tested and comply with the Electromagnetic Interference/Electromagnetic  
Susceptibility (EMI/EMS) for Class B products. Drives are tested in a representative, end-user system by a  
Korean-recognized lab.  
• Family name:  
Savvio SAS  
• Certificate number:  
STX-ST9600204SS (B)  
Taiwanese BSMI  
If this model has two Chinese words meaning “EMC certification” followed by an eight digit identification num-  
ber, as a Marking, it complies with Chinese National Standard (CNS) 13438 and meets the Electromagnetic  
Compatibility (EMC) Framework requirements of the Taiwanese Bureau of Standards, Metrology, and Inspec-  
tion (BSMI).  
Savvio 10K.4 SAS Product Manual, Rev. A  
3
           
2.1.3  
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.  
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.  
2.2  
Reference documents  
SCSI Commands Reference Manual  
SAS Interface Manual  
Seagate part number: 100293068  
Seagate part number: 100293071  
ANSI SAS Documents  
SFF-8223  
2.5” Drive Form Factor with Serial Connector  
HSS Backplane Design Guidelines  
Multi Lane Copper Connector  
SAS Plug Connector  
SFF-8460  
SFF-8470  
SFF-8482  
ANSI INCITS.xxx Serial Attached SCSI (SAS) Standard (T10/1562-D)  
ISO/IEC 14776-xxx SCSI Architecure Model-3 (SAM-3) Standard (T10/1561-D)  
ISO/IEC 14776-xxx SCSI Primary Commands-3 (SPC-3) Standard (T10/1416-D)  
ISO/IEC 14776-xxx SCSI Block Commands-2 (SBC-2) Standard (T10/1417-D)  
ANSI Small Computer System Interface (SCSI) Documents  
X3.270-1996 (SCSI-3) Architecture Model  
Trusted Computing Group (TCG) Documents (apply to Self-Encrypting Drive models only)  
TCG Storage Architecture Core Specification, Rev. 1.0  
TCG Storage Security Subsystem Class Enterprise Specification, Rev. 1.0  
Self-Encrypting Drives Reference Manual  
Seagate part number: 100515636  
Seagate part number: 30553-001  
Specification for Acoustic Test Requirement and Procedures  
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.  
4
Savvio 10K.4 SAS Product Manual, Rev. A  
                 
3.0  
General description  
Savvio drives provide high performance, high capacity data storage for a variety of systems including engi-  
neering workstations, network servers, mainframes, and supercomputers. The Serial Attached SCSI interface  
is designed to meet next-generation computing demands for performance, scalability, flexibility and high-den-  
sity storage requirements.  
Savvio drives are random access storage devices designed to support the Serial Attached SCSI Protocol as  
described in the ANSI specifications, this document, and the SAS Interface Manual (part number 100293071)  
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. The SAS connec-  
tors, cables and electrical interface are compatible with Serial ATA (SATA), giving future users the choice of  
populating their systems with either SAS or SATA hard disc drives. This allows you to continue to leverage your  
existing investment in SCSI while gaining a 6Gb/s serial data transfer rate.  
The Self-Encrypting Drive models indicated on the cover of this product manual have provisions for “Security  
group.org).  
Note. Never disassemble the HDA and do not attempt to service items in the sealed enclosure (heads,  
media, actuator, etc.) as this requires special facilities. The drive does not contain user-replaceable  
parts. Opening the HDA for any reason voids your warranty.  
Savvio drives use a dedicated load/unload zone at the outermost radius of the media to eliminate the possibil-  
ity of destroying or degrading data by landing in the data zone. The heads automatically go to the ramp load/  
unload 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 10K.4 SAS Product Manual, Rev. A  
5
     
3.1  
Standard features  
Savvio® 10K.4 SAS drives have the following standard features:  
• 1.5 / 3 / 6 Gb Serial Attached SCSI (SAS) interface  
• Integrated dual port SAS controller supporting the SCSI protocol  
• Support for SAS expanders and fanout adapters  
• Firmware downloadable using the SAS interface  
• 128 - deep task set (queue)  
• Supports up to 32 initiators  
• Jumperless configuration  
• User-selectable logical block size (512, 520, 524 or 528 bytes per logical block)  
• 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  
• Reallocation of defects on command (Post Format)  
• ECC maximum burst correction length of 520 bits  
• No preventive maintenance or adjustments required  
• Dedicated head load/unload zone and automatic shipping lock  
• Embedded servo design  
• Self diagnostics performed when power is applied to the drive  
• Zone bit recording (ZBR)  
• Vertical, horizontal, or top down mounting  
• Dynamic spindle brake  
• 16MB data buffer (see Section 4.5)  
• Drive Self Test (DST)  
• Background Media Scan (BMS)  
• Idle Read After Write (IRAW)  
• Power Choice  
Savvio® 10K.4 SAS Self-Encrypting Drive models have the following additional features:  
• Automatic data encryption/decryption  
• Controlled access  
• Random number generator  
• Drive locking  
• 16 independent data bands  
• Cryptographic erase of user data for a drive that will be repurposed or scrapped  
• Authenticated firmware download  
3.2  
Media description  
The media used on the drive has an glass substrate coated with a thin film magnetic material, overcoated with  
a proprietary protective layer for improved durability and environmental protection.  
6
Savvio 10K.4 SAS Product Manual, Rev. A  
                       
3.3  
Performance  
• Programmable multi-segmentable cache buffer  
• 600Mb/s maximum instantaneous data transfers.  
• 10K RPM spindle. Average latency = 3.0ms  
• Background processing of queue  
• Supports start and stop commands (spindle stops spinning)  
• Adaptive seek velocity; improved seek performance  
Note. There is no significant performance difference between Self-Encrypting Drive and standard (non-  
Self-Encrypting Drive) models.  
3.4  
Reliability  
• Annualized Failure Rate (AFR) of 0.44%  
• Mean time between failures (MTBF) of 2,000,000 hours  
• Balanced low mass rotary voice coil actuator  
• 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:  
Seagate designs specify capacity points at certain block sizes that Seagate guarantees current and future  
products will meet. We recommend customers use this capacity in their project planning, as it ensures a stable  
operating point with backward and forward compatibility from generation to generation. The current guaranteed  
operating points for this product are shown below.  
Capacity (Blocks)  
ST9600204SS  
ST9600104SS  
ST9450404SS  
ST9450304SS  
Sector Size  
512  
Decimal  
Hex  
Decimal  
Hex  
1,172,123,568  
1,147,307,696  
1,132,015,600  
1,115,749,560  
45DD2FB0h  
446286B0h  
43792FF0h  
4280FCB8h  
879,097,968  
860,480,776  
849,011,704  
836,812,168  
3465F870h  
3349E508h  
329AE3F8h  
31E0BD88h  
520  
524  
528  
3.6  
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 SAS Interface Manual, part number 100293071. A value of zero in  
the Number of Blocks field indicates that the drive will not change the capacity it is currently formatted to have.  
A number other than zero and less than the maximum number of LBAs in the Number of Blocks field changes  
the total drive capacity to the value in the Number of Blocks field. A value greater than the maximum number of  
LBAs is rounded down to the maximum capacity.  
Savvio 10K.4 SAS Product Manual, Rev. A  
7
                   
3.7  
Factory-installed options  
You may order the following items which are incorporated at the manufacturing facility during production or  
packaged before shipping. Some of the options available are (not an exhaustive list of possible options):  
• Other capacities can be ordered depending on sparing scheme and sector size requested.  
• Single-unit shipping pack. The drive is normally shipped in bulk packaging to provide maximum protection  
against transit damage. Units shipped individually require additional protection as provided by the single unit  
shipping pack. Users planning single unit distribution should specify this option.  
• The Safety and Regulatory Agency Specifications, part number 75789512, is usually included with each  
standard OEM drive shipped, but extra copies may be ordered.  
8
Savvio 10K.4 SAS Product Manual, Rev. A  
     
4.0  
Performance characteristics  
This section provides detailed information concerning performance-related characteristics and features of Sav-  
vio drives.  
4.1  
Internal drive characteristics  
ST9600204SS  
ST9600104SS  
600  
ST9450404SS  
ST9450304SS  
450  
Drive capacity  
GB (formatted, rounded off value)  
Read/write data heads  
Bytes per track  
Bytes per surface  
Tracks per surface (total)  
Tracks per inch  
Peak bits per inch  
Areal density  
Internal data rate  
Disc rotation speed  
Avg rotational latency  
6
5
677,557  
100,021  
147,620  
240,000  
1,430  
343  
1.62  
10K  
3.0  
677,557  
75,016  
110,715  
180,000  
1,430  
257.4  
1.62  
Bytes (average, rounded off values)  
MB (unformatted, rounded off value)  
Tracks (user accessible)  
TPI (average)  
kBPI  
Gb/in  
2
Gb/s (variable with zone)  
rpm  
ms  
10K  
3.0  
4.2  
Seek performance characteristics  
See Section 10.4.1, "SAS physical interface" on page 59 and the SAS Interface Manual (part number  
100293071) for additional timing details.  
4.2.1  
Access time  
1,2  
1,2  
Including controller overhead (ms) Not including controller overhead (ms)  
Read  
4.0  
Write  
4.6  
Read  
3.8  
Write  
4.4  
Average  
600GB  
Typical  
Single track  
Full stroke  
Average  
0.50  
8.01  
4.0  
0.76  
8.38  
4.6  
0.30  
7.81  
3.8  
0.56  
8.18  
4.4  
3 4  
,
450GB  
Single track  
Full stroke  
0.50  
7.96  
0.76  
8.51  
0.30  
7.76  
0.56  
8.31  
Typical3,4  
1.  
2.  
3.  
Execution time measured from receipt of the Command to the Response.  
Assumes no errors and no sector has been relocated.  
Typical access times are measured under nominal conditions of temperature, voltage, and horizontal orientation as  
measured on a representative sample of drives.  
4.  
Access time = controller overhead + average seek time and applies to all data transfer commands.  
Access to data = access time + latency time.  
Savvio 10K.4 SAS Product Manual, Rev. A  
9
                                                   
4.2.2  
Format command execution time for 512-byte sectors (minutes)  
ST9600204SS  
ST9600104SS  
ST9450404SS  
ST9450304SS  
Maximum (with verify)  
184  
92  
136  
68  
Maximum (without verify)  
Note. There is no significant difference in the format time between SED and non-SED models of the  
same capacity.  
4.2.3  
General performance characteristics  
Minimum sector interleave  
1 to 1  
Data buffer to/from disc media (one 512-byte logical block)*  
Sustained transfer rate  
72 to 135 MB/s  
72 to 135 MB/s  
SAS Interface maximum instantaneous transfer rate  
600 MB/s* per port  
(dual port = 1200 MB/s*)  
Logical block sizes  
512 (default), 520, 524 or 528.  
Read/write consecutive sectors on a track  
Yes  
Flaw reallocation performance impact (for flaws reallocated at format time using the  
spare sectors per sparing zone reallocation scheme.)  
Negligible  
Average rotational latency  
3.0ms  
*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 30  
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.  
The START STOP UNIT command may be used to command the drive to stop the spindle. Stop time is 20 sec-  
onds (maximum) from removal of DC power. SCSI stop time is 20 seconds. There is no power control switch  
on the drive.  
10  
Savvio 10K.4 SAS Product Manual, Rev. A  
                       
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.  
All default cache and prefetch mode parameter values (Mode Page 08h) for standard OEM versions of this  
drive family are given in Table 9.  
4.5  
Cache operation  
Note. Refer to the SAS Interface Manual for more detail concerning the cache bits.  
Of the 16Mb physical buffer space in the drive, approximately 13,000Kb can be used as a cache. The buffer is  
divided into logical segments from which data is read and to which data is written.  
The drive keeps track of the logical block addresses of the data stored in each segment of the buffer. If the  
cache is enabled (see RCD bit in the SAS 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 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. All data transfers to the host are in accordance with buffer-full ratio rules. See  
the explanation provided with the information about Mode Page 02h (disconnect/reconnect control) in the SAS  
Interface Manual.  
The following is a simplified description of the prefetch/cache operation:  
Case A—read command is received and all of the requested logical blocks are already in the cache:  
1. Drive transfers the requested logical blocks to the initiator.  
Case B—A Read command requests data, and at least one requested logical block is not in any segment of  
the cache:  
1. The drive fetches the requested logical blocks from the 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 10K.4 SAS Product Manual, Rev. A  
11  
                     
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 9 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 buf-  
fer 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.  
12  
Savvio 10K.4 SAS Product Manual, Rev. A  
 
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.  
Seek error rate:  
Less than 10 errors in 108 seeks  
1
Read Error Rates  
Recovered Data  
Unrecovered Data  
Miscorrected Data  
Less than 10 errors in 1012 bits transferred (OEM default settings)  
Less than 1 sector in 1016 bits transferred  
Less than 1 sector in 1021 bits transferred  
Less than 1 error in 1012 bits transferred  
2,000,000 hours  
Interface error rate:  
Mean Time Between Failure (MTBF):  
Annualized Failure Rate (AFR):  
Preventive maintenance:  
0.44%  
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 6.3, "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  
Recovereable errors are those detected and corrected by the drive, and do not require user intervention.  
Recoverable Data errors will use Error Correction when needed.  
Recovered Data error rate is determined using read bits transferred for recoverable errors occurring during a  
read, and using write bits transferred for recoverable errors occurring during a write.  
5.1.2  
Unrecoverable Errors  
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.  
Savvio 10K.4 SAS Product Manual, Rev. A  
13  
                                   
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.  
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 9.2 provides recommended air-flow information.  
5.2.1  
Annualized Failure Rate (AFR) and Mean Time Between Failure (MTBF)  
The production disc drive shall achieve an AFR of 0.44% (MTBF of 2,000,000 hours) when operated in an  
environment that ensures the HDA case temperatures do not exceed the values specified in Section 6.5. Oper-  
ation at case temperatures outside the specifications in Section 6.5 may increase the product AFR (decrease  
the MTBF). The AFR (MTBF) is a population statistic not relevant to individual units.  
The AFR (MTBF) specification is based on the following assumptions for Enterprise Storage System environ-  
ments:  
• 8,760 power-on hours per year.  
• 250 average on/off cycles per year.  
• Operations at nominal voltages.  
• Systems will provide adequate cooling to ensure the case temperatures specified in Section 6.5 are not  
exceeded. Temperatures outside the specifications in Section 6.5 will increase the product AFR and  
decrease the MTBF.  
5.2.2  
Preventive maintenance  
No routine scheduled preventive maintenance is required.  
5.2.3  
Hot plugging the drive  
When a disc is powered on by switching the power or hot plugged, the drive runs a self test before attempting  
to communicate on its’ interfaces. When the self test completes successfully, the drive initiates a Link Reset  
starting with OOB. An attached device should respond to the link reset. If the link reset attempt fails, or any  
time the drive looses sync, the drive initiated link reset. The drive will initiate link reset once per second but  
alternates between port A and B. Therefore each port will attempt a link reset once per 2 seconds assuming  
both ports are out of sync..  
If the self-test fails, the drive does not respond to link reset on the failing port.  
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.  
14  
Savvio 10K.4 SAS Product Manual, Rev. A  
                           
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 one hour.  
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.  
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 hour subject to an idle period on the drive inter-  
faces. The process of measuring off-line attribute data and saving data to the disc is interruptable. The  
maximum on-line only processing delay is summarized below  
Maximum processing delay  
Fully-enabled delay  
DEXCPT = 0  
S.M.A.R.T. delay times  
75 ms  
Reporting control  
Reporting is controlled by the MRIE bits in the Informational Exceptions Control mode page (1Ch). Subject to  
the reporting method. For example, if the MRIE is set to one, the firmware will issue to the host an 01-5D00  
sense code. The FRU field contains the type of predictive failure that occurred. 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.  
Savvio 10K.4 SAS Product Manual, Rev. A  
15  
   
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.  
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 68°C. If you specify a temperature greater than 68°C in this field, the temperature is rounded  
down to 68°C. A sense code is sent to the host to indicate the rounding of the parameter field.  
Table 1:  
Temperature Log Page (0Dh)  
Parameter Code  
Description  
Primary Temperature  
Reference Temperature  
0000h  
0001h  
16  
Savvio 10K.4 SAS Product Manual, Rev. A  
   
5.2.6  
Drive Self Test (DST)  
Drive Self Test (DST) is a technology designed to recognize drive fault conditions that qualify the drive as a  
failed unit. DST validates the functionality of the drive at a system level.  
There are two test coverage options implemented in DST:  
1. Extended test  
2. Short test  
The most thorough option is the extended test that performs various tests on the drive and scans every logical  
block address (LBA) of the drive. The short test is time-restricted and limited in length—it does not scan the  
entire media surface, but does some fundamental tests and scans portions of the media.  
If DST encounters an error during either of these tests, it reports a fault condition. If the drive fails the test,  
remove it from service and return it to Seagate for service.  
5.2.6.1  
DST failure definition  
The drive will present a “diagnostic failed” condition through the self-tests results value of the diagnostic log  
page if a functional failure is encountered during DST. The channel and servo parameters are not modified to  
test the drive more stringently, and the number of retries are not reduced. All retries and recovery processes  
are enabled during the test. If data is recoverable, no failure condition will be reported regardless of the number  
of retries required to recover the data.  
The following conditions are considered DST failure conditions:  
• Seek error after retries are exhausted  
• Track-follow error after retries are exhausted  
• Read error after retries are exhausted  
• Write error after retries are exhausted  
Recovered errors will not be reported as diagnostic failures.  
5.2.6.2  
Implementation  
This section provides all of the information necessary to implement the DST function on this drive.  
5.2.6.2.1  
State of the drive prior to testing  
The drive must be in a ready state before issuing the Send Diagnostic command. There are multiple reasons  
why a drive may not be ready, some of which are valid conditions, and not errors. For example, a drive may be  
in process of doing a format, or another DST. It is the responsibility of the host application to determine the “not  
ready” cause.  
While not technically part of DST, a Not Ready condition also qualifies the drive to be returned to Seagate as a  
failed drive.  
A Drive Not Ready condition is reported by the drive under the following conditions:  
• Motor will not spin  
• Motor will not lock to speed  
• Servo will not lock on track  
• Drive cannot read configuration tables from the 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.  
Savvio 10K.4 SAS Product Manual, Rev. A  
17  
 
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.  
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).  
18  
Savvio 10K.4 SAS Product Manual, Rev. A  
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. Sea-  
gate 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.  
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.  
Savvio 10K.4 SAS Product Manual, Rev. A  
19  
             
6.0  
Physical/electrical specifications  
This section provides information relating to the physical and electrical characteristics of the drive.  
6.1  
PowerChoiceTM power management  
Drives using the load/unload architecture provide programmable power management to tailor systems for per-  
formance and greater energy efficiency.  
The table below lists the supported PowerChoice modes. The further you go down in the table, the more power  
savings you get. For example, Idle_B mode results in greater power savings than Idle_A mode. Standby  
modes results in the greatest power savings.  
PowerChoice modes  
Mode  
Description  
Idle_A  
Reduced electronics  
Idle_B  
Heads unloaded. Disks spinning at full RPM  
Heads unloaded. Disks spinning at reduced RPM  
Idle_C  
Standby_Y  
Heads unloaded. Disks spinning at reduced RPM.  
Recovery requires the NOTIFY (Enable Spinup) primitive.  
Standby_Z  
Heads unloaded. Motor stopped (disks not spinning)  
Recovery requires the NOTIFY (Enable Spinup) primitive.  
PowerChoiceTM can be invoked using one of these two methods:  
• Power Condition mode page method—Enable and initialize the idle condition timers and/or the standby con-  
dition timers. The timer values are based on the values set in the Power Condition mode page.  
• START STOP UNIT command method—Use the START STOP UNIT command (OPERATION CODE 1Bh).  
This allows the host to directly transition the drive to any supported PowerChoice mode.  
If both the Power Condition mode page and START STOP UNIT command methods are used, the START  
STOP UNIT command request takes precedence over the Power Condition mode page power control and may  
disable the idle condition and standby condition timers. The REQUEST SENSE command reports the current  
PowerChoice state if active and also the method by which the drive entered the PowerChoice state.  
When the drive receives a command, all power condition timers are suspended if they were enabled via the  
Power Condition mode page. Once all outstanding commands are processed, the power condition timers are  
reinitialized to the values defined in the Power Condition mode page.  
20  
Savvio 10K.4 SAS Product Manual, Rev. A  
                         
6.1.1  
PowerChoice reporting methods  
PowerChoiceTM provides these reporting methods for tracking purposes:  
Request Sense command reports  
• Current power condition  
• Method of entry  
Note. Processing the Request Sense command does not impact the drive’s power save state.  
Mode Sense command reports (mode page 0x1A)  
• Idle conditions enabled / disabled  
• Idle condition timer values (100ms increments) (default, saved, current, changeable)  
Power Condition Vital Product Data (VPD) Page (VPD page 0x8A)  
• Supported power conditions  
• Typical recovery time from power conditions (1ms increments)  
Start/Stop Cycle Counter Log Page reports (log page 0x0E)  
• Specified and accumulated Start/Stops and Load/Unload cycles  
Power Condition Transitions Log Page reports (log page 0x1A, subpage 0x00)  
• Accumulated transitions to Active, Idle_A, Idle_B, Idle_C, Standby_Y, Standby_Z  
6.2  
AC power requirements  
None.  
6.3  
DC power requirements  
The voltage and current requirements for a single drive are shown below. Values indicated apply at the drive  
connector.  
The standard drive models and the SED drive models have identical hardware, however the security and  
encryption portion of the drive controller ASIC is enabled and functional in the SED models. This represents a  
small additional drain on the 5V supply of about 30mA and a commensurate increase of about 150mW in  
power consumption. There is no additional drain on the 12V supply.  
Savvio 10K.4 SAS Product Manual, Rev. A  
21  
               
Table 2:  
600GB standard drive DC power requirements  
600GB standard model  
600 GB standard model  
6.0Gb mode  
3.0Gb mode  
(Amps)  
+5V  
Notes  
(Amps)  
+12V [2]  
±5% [2]  
0.24  
(Amps)  
+5V  
(Amps)  
+12V [2]  
±5% [2]  
0.24  
Voltage  
Regulation  
[5]  
±5%  
±5%  
Avg idle current DC  
Advanced Idle Current  
Idle_A  
[1] [7]  
0.33  
0.34  
3σ  
3σ  
3σ  
3σ  
0.32  
0.23  
0.23  
0.23  
0.24  
0.21  
0.11  
0.06  
0.33  
0.24  
0.24  
0.24  
0.24  
0.21  
0.10  
0.05  
Idle_B  
Idle_C  
Standby  
Transition Current  
Idle_A - Active  
3σ  
3σ  
3σ  
3σ  
0.72  
0.68  
0.64  
0.64  
1.58  
1.53  
1.53  
1.61  
0.70  
0.66  
0.66  
0.68  
1.42  
1.51  
1.51  
1.61  
Idle_B - Active  
Idle_C - Active  
Standby - Active  
Maximum starting current  
(peak DC) DC  
3σ [3]  
0.51  
0.75  
0.46  
0.87  
1.63  
0.07  
0.53  
0.86  
0.47  
0.87  
1.65  
0.07  
(peak AC) AC  
3σ [3]  
Delayed motor start (max) DC  
Peak operating current (random read):  
Typical DC  
3σ [1] [4]  
[1] [6]  
3σ [1]  
3σ  
0.43  
0.44  
1.06  
0.51  
0.52  
1.54  
0.44  
0.46  
1.10  
0.51  
0.52  
1.52  
Maximum DC  
Maximum (peak) DC  
Peak operatig current (random write)  
Typical DC  
0.48  
0.49  
1.02  
0.42  
0.44  
1.54  
0.50  
0.50  
1.04  
0.42  
0.44  
1.56  
Maximum DC  
3σ  
Maximum (peak) DC  
Peak operating current (sequential read)  
Typical DC  
3σ  
0.82  
0.86  
1.12  
0.26  
0.27  
0.42  
0.84  
0.88  
1.16  
0.27  
0.27  
0.42  
Maximum DC  
3σ  
Maximum (peak) DC  
Peak operating current (sequential write)  
Typical DC  
3σ  
0.80  
0.82  
1.02  
0.25  
0.27  
0.66  
0.81  
0.83  
1.04  
0.25  
0.27  
0.76  
Maximum DC  
3σ  
Maximum (peak) DC  
3σ  
22  
Savvio 10K.4 SAS Product Manual, Rev. A  
       
Table 3:  
450GB standard model DC power requirements  
450GB standard model  
450GB standard model  
6.0Gb mode  
3.0Gb mode  
(Amps)  
+5V  
Notes  
(Amps)  
+12V [2]  
±5% [2]  
0.24  
(Amps)  
+5V  
(Amps)  
+12V [2]  
±5% [2]  
0.24  
Voltage  
Regulation  
[5]  
±5%  
±5%  
Avg idle current DC  
Advanced Idle Current  
Idle_A  
[1] [7]  
0.34  
0.35  
3σ  
3σ  
3σ  
3σ  
0.34  
0.24  
0.24  
0.24  
0.24  
0.21  
0.10  
0.06  
0.35  
0.25  
0.25  
0.25  
0.24  
0.21  
0.10  
0.06  
Idle_B  
Idle_C  
Standby  
Transition Current  
Idle_A - Active  
3σ  
3σ  
3σ  
3σ  
0.68  
0.66  
0.74  
0.68  
1.58  
1.54  
1.70  
1.64  
0.78  
0.66  
0.66  
0.70  
1.56  
1.54  
1.66  
1.60  
Idle_B - Active  
Idle_C - Active  
Standby - Active  
Maximum starting current  
(peak DC) DC  
3σ [3]  
0.54  
0.80  
0.48  
0.87  
1.66  
0.07  
0.56  
0.85  
0.49  
0.87  
1.62  
0.07  
(peak AC) AC  
3σ [3]  
Delayed motor start (max) DC  
Peak operating current (random read):  
Typical DC  
3σ [1] [4]  
[1] [6]  
3σ [1]  
3σ  
0.44  
0.47  
1.08  
0.53  
0.54  
1.54  
0.46  
0.48  
1.08  
0.53  
0.54  
1.54  
Maximum DC  
Maximum (peak) DC  
Peak operatig current (random write)  
Typical DC  
0.49  
0.52  
1.02  
0.44  
0.46  
1.58  
0.50  
0.53  
1.02  
0.43  
0.45  
1.56  
Maximum DC  
3σ  
Maximum (peak) DC  
Peak operating current (sequential read)  
Typical DC  
3σ  
0.86  
0.88  
1.12  
0.27  
0.29  
0.44  
0.87  
0.89  
1.14  
0.27  
0.28  
0.44  
Maximum DC  
3σ  
Maximum (peak) DC  
Peak operating current (sequential write)  
Typical DC  
3σ  
0.80  
0.85  
1.04  
0.27  
0.29  
0.80  
0.81  
0.86  
1.04  
0.27  
0.28  
0.80  
Maximum DC  
3σ  
Maximum (peak) DC  
3σ  
[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.  
Savvio 10K.4 SAS Product Manual, Rev. A  
23  
         
[2] For +12 V, a –10% tolerance is allowed during initial spindle start but must return to ±5% before reaching  
9,936 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 16.  
[4] This condition occurs after OOB and Speed Negotiation completes but before the drive has received the  
Notify Spinup primitive.  
[5] See paragraph 6.3.1, "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 30 seconds to a random location within the band from  
three-quarters to maximum track.  
24  
Savvio 10K.4 SAS Product Manual, Rev. A  
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.  
6.3.1  
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  
=
=
250 mV pp from 100 Hz to 20 MHz.  
+12v  
800 mV pp from 100 Hz to 8 KHz.  
450 mV pp from 8 KHz to 20 KHz.  
250 mV pp from 20 KHz to 5 MHz.  
6.3.2  
Power sequencing  
The drive does not require power sequencing. The drive protects against inadvertent writing during power-up  
and down.  
Savvio 10K.4 SAS Product Manual, Rev. A  
25  
         
6.3.3  
Current profiles  
The +12V and +5V current profiles for the Savvio 10K.4 drives are shown below.  
F1  
F2  
Figure 16. Current profiles for 600GB models  
26  
Savvio 10K.4 SAS Product Manual, Rev. A  
     
F1  
F2  
Figure 17. Current profiles for 450GB models  
Note: All times and currents are typical. See Tables 2 and 3 for maximum current requirements.  
Savvio 10K.4 SAS Product Manual, Rev. A  
27  
 
6.4  
Power dissipation  
600 GB models in 3Gb operation  
Typical power dissipation under operating conditions in 3Gb operation is 8.23 watts (28.08 BTUs per hour).  
To obtain operating power for typical random read operations, refer to the following I/O rate curve (see Figure  
18). 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.  
Figure 18. 600GB (at 3Gb) DC current and power vs. input/output operations per second  
28  
Savvio 10K.4 SAS Product Manual, Rev. A  
     
600GB models in 6Gb operation  
Typical power dissipation under operating conditions in 6Gb operation is 8.29 watts (28.29 BTUs per hour).  
To obtain operating power for typical random read operations, refer to the following I/O rate curve (see Figure  
18). 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.  
Figure 19. 600GB (at 6Gb) DC current and power vs. input/output operations per second  
Savvio 10K.4 SAS Product Manual, Rev. A  
29  
 
450GB models in 3Gb operation  
Typical power dissipation under operating conditions in 3Gb operation is 8.48 watts (28.93 BTUs per hour).  
To obtain operating power for typical random read operations, refer to the following I/O rate curve (see Figure  
18). 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.  
Figure 20. 450GB (at 3Gb) DC current and power vs. input/output operations per second  
30  
Savvio 10K.4 SAS Product Manual, Rev. A  
 
450GB models in 6Gb operation  
Typical power dissipation under operating conditions in 6Gb operation is 8.53 watts (29.10 BTUs per hour).  
To obtain operating power for typical random read operations, refer to the following I/O rate curve (see Figure  
18). 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.  
Figure 21. 450GB (at 6Gb) DC current and power vs. input/output operations per second  
6.5  
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).  
Note. To maintain optimal performance drives should be run at nominal case temperatures.  
6.5.1  
Temperature  
a. Operating  
The maximum allowable continuous or sustained HDA case temperature for the rated Annualized Failure  
Rate (AFR) is 122°F (50°C) The maximum allowable HDA case temperature is 60°C. Occasional excur-  
sions of HDA case temperatures above 122°F (50°C) or below 41°F (5°C) may occur without impact to the  
specified AFR. Continual or sustained operation at HDA case temperatures outside these limits may  
degrade AFR.  
Provided the HDA case temperatures limits are met, the drive meets all specifications over a 41°F to 131°F  
(5°C to 55°C) drive ambient temperature range with a maximum temperature gradient of 68°F (20°C) per  
hour. Air flow may be needed in the drive enclosure to keep within this range (see Section 8.3). Operation at  
HDA case temperatures outside this range may adversely affect the drives ability to meet specifications. To  
confirm that the required cooling for the electronics and HDA case is provided, place the drive in its final  
mechanical configuration, perform random write/read operations and measure the HDA case temperature  
after it has stabilized.  
Savvio 10K.4 SAS Product Manual, Rev. A  
31  
                       
b. Non-operating  
–40° to 158°F (–40° to 70°C) package ambient with a maximum gradient of 68°F (20°C) per hour. This  
specification assumes that the drive is packaged in the shipping container designed by Seagate for use with  
drive.  
Figure 22. Location of the HDA temperature check point  
6.5.2  
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.  
6.5.3  
Effective altitude (sea level)  
a. Operating  
–1,000 to +10,000 feet (–304.8 to +3,048 meters)  
b. Non-operating  
–1,000 to +40,000 feet (–304.8 to +12,210 meters)  
6.5.4  
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 23, and in accordance with the restrictions of Section 9.3.  
32  
Savvio 10K.4 SAS Product Manual, Rev. A  
                             
6.5.4.1  
Shock  
a. Operating—normal  
The drive, as installed for normal operation, shall operate error free while subjected to intermittent shock not  
exceeding:  
• 40 Gs at a maximum duration of 11ms (half sinewave)  
• 25 Gs at a maximum duration of 2ms (half sinewave)  
Shock may be applied in the X, Y, or Z axis. Shock is not to be repeated more than once every 2 seconds.  
b. Non-operating  
The limits of non-operating shock shall apply to all conditions of handling and transportation. This includes  
both isolated drives and integrated drives.  
The drive subjected to nonrepetitive shock not exceeding the three values below, shall not exhibit device  
damage or performance degradation.  
• 80 Gs at a maximum duration of 11ms (half sinewave)  
• 400 Gs at a maximum duration of 2ms (half sinewave)  
• 300 Gs at a maximum duration of 0.5ms (half sinewave)  
Shock may be applied in the X, Y, or Z axis.  
Savvio 10K.4 SAS Product Manual, Rev. A  
33  
     
c. 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 lb (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 equiva-  
lent.  
Figure 23. Recommended mounting  
34  
Savvio 10K.4 SAS Product Manual, Rev. A  
       
6.5.4.2  
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  
5-500 Hz @ 0.5 G (zero to peak)  
Vibration may be applied in the X, Y, or Z axis.  
Operating normal translational random flat profile  
10 - 500 Hz (translational random flat profile)  
b. Operating—abnormal  
0.5 GRMS  
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  
5-500 Hz @ 0.75 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 (translational random flat profile)  
c. Non-operating  
1.2 GRMS  
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  
5-500 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 (translational random flat profile)  
2.4 GRMS  
6.5.5  
Air cleanliness  
The drive is designed to operate in a typical office environment with minimal environmental control.  
6.5.6  
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.  
Savvio 10K.4 SAS Product Manual, Rev. A  
35  
                       
6.5.7  
Acoustics  
Sound power during idle mode shall be 3.0 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.  
6.5.8  
Electromagnetic susceptibility  
See Section 2.1.1.1.  
36  
Savvio 10K.4 SAS Product Manual, Rev. A  
       
6.6  
Mechanical specifications  
The following nominal dimensions are exclusive of the decorative front panel accessory. However, dimensions  
of the front panel are shown in figure below. Refer to Figure 24 for detailed mounting configuration dimensions.  
See Section 9.3, “Drive mounting.”  
Height:  
Width:  
Depth:  
Weight:  
0.583 in  
2.755 in  
3.945 in  
14.81 mm  
69.98 mm  
100.2 mm  
0.459 pounds 0.208 kilograms  
Temperature  
Measurement  
Location  
Figure 24. Mounting configuration dimensions  
Savvio 10K.4 SAS Product Manual, Rev. A  
37  
             
7.0  
About self-encrypting drives  
Self-encrypting drives (SEDs) offer encryption and security services for the protection of stored data, com-  
monly known as “protection of data at rest.” These drives are compliant with the Trusted Computing Group  
(TCG) Enterprise Storage Specifications as detailed in Section 2.2.  
The Trusted Computing Group (TCG) is an organization sponsored and operated by companies in the com-  
puter, storage and digital communications industry. Seagate’s SED models comply with the standards pub-  
lished by the TCG.  
To use the security features in the drive, the host must be capable of constructing and issuing the following two  
SCSI commands:  
• Security Protocol Out  
• Security Protocol In  
These commands are used to convey the TCG protocol to and from the drive in their command payloads.  
7.1  
Data encryption  
Encrypting drives use one inline encryption engine for each port, employing AES-128 data encryption in Cipher  
Block Chaining (CBC) mode to encrypt all data prior to being written on the media and to decrypt all data as it  
is read from the media. The encryption engines are always in operation, cannot be disabled, and do not detract  
in any way from the performance of the drive.  
The 32-byte Data Encryption Key (DEK) is a random number which is generated by the drive, never leaves the  
drive, and is inaccessible to the host system. The DEK is itself encrypted when it is stored on the media and  
when it is in volatile temporary storage (DRAM) external to the encryption engine. A unique data encryption  
key is used for each of the drive's possible16 data bands (see Section 7.5).  
7.2  
Controlled access  
The drive has two security partitions (SPs) called the "Admin SP" and the "Locking SP." These act as gate-  
keepers to the drive security services. Security-related commands will not be accepted unless they also supply  
the correct credentials to prove the requester is authorized to perform the command.  
7.2.1  
Admin SP  
The Admin SP allows the drive's owner to enable or disable firmware download operations (see Section 7.4).  
Access to the Admin SP is available using the SID (Secure ID) password or the MSID (Makers Secure ID)  
password.  
38  
Savvio 10K.4 SAS Product Manual, Rev. A  
                                                     
7.2.2  
Locking SP  
The Locking SP controls read/write access to the media and the cryptographic erase feature. Access to the  
Locking SP is available using the BandMasterX or EraseMaster passwords. Since the drive owner can define  
up to 16 data bands on the drive, each data band has its own password called BandMasterX where X is the  
number of the data band (0 through 15).  
7.2.3  
Default password  
When the drive is shipped from the factory, all passwords are set to the value of MSID. This 32-byte random  
value is printed on the drive label and it can be read by the host electronically over the I/O. After receipt of the  
drive, it is the responsibility of the owner to use the default MSID password as the authority to change all other  
passwords to unique owner-specified values.  
7.3  
Random number generator (RNG)  
The drive has a 32-byte hardware RNG that it is uses to derive encryption keys or, if requested to do so, to pro-  
vide random numbers to the host for system use, including using these numbers as Authentication Keys (pass-  
words) for the drive’s Admin and Locking SPs.  
7.4  
Drive locking  
In addition to changing the passwords, as described in Section 7.2.3, the owner should also set the data  
access controls for the individual bands.  
The variable "LockOnReset" should be set to "PowerCycle" to ensure that the data bands will be locked if  
power is lost. This scenario occurs if the drive is removed from its cabinet. The drive will not honor any data  
read or write requests until the bands have been unlocked. This prevents the user data from being accessed  
without the appropriate credentials when the drive has been removed from its cabinet and installed in another  
system.  
When the drive is shipped from the factory, the firmware download port is locked and the drive will reject any  
attempt to download new firmware. The drive owner must use the SID credential to unlock the firmware down-  
load port before firmware updates will be accepted.  
7.5  
Data bands  
When shipped from the factory, the drive is configured with a single data band called Band 0 (also known as  
the Global Data Band) which comprises LBA 0 through LBA max. The host may allocate Band1 by specifying a  
start LBA and an LBA range. The real estate for this band is taken from the Global Band. An additional 14 Data  
Bands may be defined in a similar way (Band2 through Band15) but before these bands can be allocated LBA  
space, they must first be individually enabled using the EraseMaster password.  
Data bands cannot overlap but they can be sequential with one band ending at LBA (x) and the next beginning  
at LBA (x+1).  
Each data band has its own drive-generated encryption key and its own user-supplied password. The host may  
change the Encryption Key (see Section 7.6) or the password when required. The bands should be aligned to  
4K LBA boundaries.  
Savvio 10K.4 SAS Product Manual, Rev. A  
39  
                                           
7.6  
Cryptographic erase  
A significant feature of SEDs is the ability to perform a cryptographic erase. This involves the host telling the  
drive to change the data encryption key for a particular band. Once changed, the data is no longer recoverable  
since it was written with one key and will be read using a different key. Since the drive overwrites the old key  
with the new one, and keeps no history of key changes, the user data can never be recovered. This is tanta-  
mount to an instantaneous data erase and is very useful if the drive is to be scrapped or redispositioned.  
7.7  
Authenticated firmware download  
In addition to providing a locking mechanism to prevent unwanted firmware download attempts, the drive also  
only accepts download files which have been cryptographically signed by the appropriate Seagate Design  
Center.  
Three conditions must be met before the drive will allow the download operation:  
1. The download must be an SED file. A standard (base) drive (non-SED) file will be rejected.  
2. The download file must be signed and authenticated.  
3. As with a non-SED drive, the download file must pass the acceptance criteria for the drive. For example it  
must be applicable to the correct drive model, and have compatible revision and customer status.  
7.8  
Power requirements  
The standard drive models and the SED drive models have identical hardware, however the security and  
encryption portion of the drive controller ASIC is enabled and functional in the SED models. This represents a  
small additional drain on the 5V supply of about 30mA and a commensurate increase of about 150mW in  
power consumption. There is no additional drain on the 12V supply. See the tables in Section 6.3 for power  
requirements on the standard (non-SED) drive models.  
7.9  
Supported commands  
The SED models support the following two commands in addition to the commands supported by the standard  
(non-SED) models as listed in Table 7:  
• Security Protocol Out (B5h)  
• Security Protocol In (A2h)  
40  
Savvio 10K.4 SAS Product Manual, Rev. A  
         
8.0  
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 8.4)  
• Media Pre-Scan (see Section 8.5)  
• Deferred Auto-Reallocation (see Section 8.6)  
• Idle Read After Write (see Section 8.7)  
The read error rates and specified storage capacities are not dependent on host (initiator) defect management  
routines.  
8.1  
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 SAS Interface Manual. Also, more  
information on the drive Error Recovery philosophy is presented in the SAS Interface Manual.  
8.2  
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 SAS Interface Manual. The drive implements selectable error recovery  
time limits required in video applications.  
The error recovery scheme supported by the drive provides a way to control the total error recovery time for the  
entire command in addition to controlling the recovery level for a single LBA. The total amount of time spent in  
error recovery for a command can be limited using the Recovery Time Limit bytes in the Error Recovery mode  
page. The total amount of time spent in error recovery for a single LBA can be limited using the Read Retry  
Count or Write Retry Count bytes in the Error Recovery mode page.  
Savvio 10K.4 SAS Product Manual, Rev. A  
41  
               
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  
Maximum recovery time per  
LBA (cumulative, ms)  
Read retry count LBA (cumulative, ms)  
Write retry count  
0
77.87  
89.85  
0
35.94  
53.91  
1
1
2
305.49  
347.42  
472.94  
512.32  
560.24  
701.17  
803.25  
851.17  
893.10  
1115.08  
2106.65  
2
79.89  
3
3
97.86  
4
4
175.85  
421.79  
5
5 (default)  
6
7
8
9
10  
11  
12 (default)  
Setting these retry counts to a value below the default setting could result in degradation of the unrecovered  
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 371ms recovery time for each  
block and a maximum of 450ms 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 status and an unrecoverable read error  
will be reported.  
8.3  
SAS system errors  
Information on the reporting of operational errors or faults across the interface is given in the SAS Interface  
Manual. The SSP 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 SAS Interface Manual. Status reporting plays a  
role in systems error management and its use in that respect is described in sections where the various com-  
mands are discussed.  
42  
Savvio 10K.4 SAS Product Manual, Rev. A  
   
8.4  
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 500ms 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 1ms.  
8.5  
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.  
8.6  
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 10K.4 SAS Product Manual, Rev. A  
43  
               
8.7  
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.  
44  
Savvio 10K.4 SAS Product Manual, Rev. A  
     
9.0  
Installation  
Savvio disc drive installation is a plug-and-play process. There are no jumpers, switches, or terminators on the  
drive.  
SAS drives are designed to be used in a host system that provides a SAS-compatible backplane with bays  
designed to accomodate the drive. In such systems, the host system typically provides a carrier or tray into  
which you need to mount the drive. Mount the drive to the carrier or tray provided by the host system using four  
M3 x 0.5 metric screws. When tightening the screws, use a maximum torque of 4.5 in-lb +/- 0.45 in-lb. Do not  
over-tighten or force the screws. You can mount the drive in any orientation.  
Note. SAS drives are designed to be attached to the host system without I/O or power cables. If you  
intend to use the drive in a non-backplane host system, connecting the drive using high-quality  
cables is acceptable as long as the I/O cable length does not exceed 10 meters (32.8 feet).  
Slide the carrier or tray into the appropriate bay in your host system using the instructions provided by the host  
system. This connects the drive directly to your system’s SAS connector. The SAS connector is normally  
located on a SAS backpanel. See Section 10.4.1 for additional information about these connectors.  
Power is supplied through the SAS connector.  
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.  
Figure 25. Physical interface  
9.1  
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.  
Savvio 10K.4 SAS Product Manual, Rev. A  
45  
               
9.2  
Cooling  
Cabinet cooling must be designed by the customer so that the ambient temperature immediately surrounding  
the drive will not exceed temperature conditions specified in Section 6.5.1, "Temperature."  
The rack, cabinet, or drawer environment for the drive must provide heat removal from the electronics and  
head and disc assembly (HDA). You should confirm that adequate heat removal is provided using the temper-  
ature measurement guidelines described in Section 6.5.1.  
Forced air flow may be required to keep temperatures at or below the temperatures specified in Section 6.5.1  
in which case the drive should be oriented, or air flow directed, so that the least amount of air flow resistance is  
created while providing air flow to the electronics and HDA. Also, the shortest possible path between the air  
inlet and exit should be chosen to minimize the travel length of air heated by the drive and other heat sources  
within the rack, cabinet, or drawer environment.  
If forced air is determined to be necessary, possible air-flow patterns are shown in Figure 26. The air-flow pat-  
terns are created by one or more 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 guide-  
lines of Section 6.5.1 are met.  
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 26. Air flow  
Note. Image of the HDA may not represent actual product, for reference only.  
46  
Savvio 10K.4 SAS Product Manual, Rev. A  
                         
9.3  
Drive mounting  
Mount the drive using the bottom or side mounting holes. If you mount the drive using the bottom holes, ensure  
that you do not physically distort the drive by attempting to mount it on a stiff, non-flat surface.  
The allowable mounting surface stiffness is 80 lb/in (14.0 N/mm). The following equation and paragraph define  
the allowable mounting surface stiffness:  
K x X = F < 15lb = 67N  
where K is the mounting surface stiffness (units in lb/in or N/mm) and X is the out-of-plane surface distortion  
(units in inches or millimeters). The out-of-plane distortion (X) is determined by defining a plane with three of  
the four mounting points fixed and evaluating the out-of-plane deflection of the fourth mounting point when a  
known force (F) is applied to the fourth point.  
9.4  
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.  
Savvio 10K.4 SAS Product Manual, Rev. A  
47  
                         
10.0  
Interface requirements  
This section partially describes the interface requirements as implemented on Savvio drives. Additional infor-  
mation is provided in the SAS Interface Manual (part number 100293071).  
10.1  
SAS features  
This section lists the SAS-specific features supported by Savvio drives.  
10.1.1  
task management functions  
Table 5 lists the SAS task management functions supported.  
Table 5:  
SAS task management functions supported  
Task name  
Abort Task  
Supported  
Yes  
Clear ACA  
Yes  
Clear task set  
Abort task set  
Yes  
Yes  
Logical Unit Reset  
Query Task  
Yes  
Yes  
10.1.2  
task management responses  
Table 6 lists the SAS response codes returned for task management functions supported.  
Table 6:  
Task management response codes  
Function name  
Function complete  
Invalid frame  
Response code  
00  
02  
04  
05  
08  
09  
Function not supported  
Function failed  
Function succeeded  
Invalid logical unit  
48  
Savvio 10K.4 SAS Product Manual, Rev. A  
                                 
10.2  
Dual port support  
Savvio SAS drives have two independent ports. These ports may be connected in the same or different SCSI  
domains. Each drive port has a unique SAS address.  
The two ports have the capability of independent port clocking (e.g. both ports can run at 6Gb/s or the first port  
can run at 6Gb/s while the second port runs at 3Gb/s.) The supported link rates are 1.5, 3.0, or 6.0 Gb/s.  
Subject to buffer availability, the Savvio drives support:  
• Concurrent port transfers—The drive supports receiving COMMAND, TASK management transfers on both  
ports at the same time.  
• Full duplex—The drive supports sending XFER_RDY, DATA and RESPONSE transfers while receiving  
frames on both ports.  
Savvio 10K.4 SAS Product Manual, Rev. A  
49  
   
10.3  
SCSI commands supported  
Table 7 lists the SCSI commands supported by Savvio drives.  
Table 7: Supported commands  
Command name  
Command code  
Supported  
Change Definition  
40h  
39h  
18h  
3Ah  
04h  
N
Compare  
N
N
N
Y
N
Y
Y
Y
Y
Y
N
Y
Y
Y
Y
Y
Y
Y
Y
N
Y
Y
N
Y
Y
N
N
N
Y
Y
Y
N
Y
Y
N
Copy  
Copy and Verify  
Format Unit [1]  
DPRY bit supported  
DCRT bit supported  
STPF bit supported  
IP bit supported  
DSP bit supported  
IMMED bit supported  
VS (vendor specific)  
Inquiry  
12h  
Date Code page (C1h)  
Device Behavior page (C3h)  
Firmware Numbers page (C0h)  
Implemented Operating Def page (81h)  
Jumper Settings page (C2h)  
Supported Vital Product Data page (00h)  
Unit Serial Number page (80h)  
Lock-unlock cache  
Log Select  
36h  
4Ch  
PCR bit  
DU bit  
DS bit  
TSD bit  
ETC bit  
TMC bit  
LP bit  
Protocol-specific Log Page for SAS (18h)  
Log Sense  
4Dh  
Application Client Log page (0Fh)  
Buffer Over-run/Under-run page (01h)  
Cache Statistics page (37h)  
Factory Log page (3Eh)  
Information Exceptions Log page (2Fh)  
50  
Savvio 10K.4 SAS Product Manual, Rev. A  
   
Table 7:  
Supported commands  
Command name  
Command code  
Supported  
Last n Deferred Errors or Asynchronous Events page (0Bh)  
Last n Error Events page (07h)  
Non-medium Error page (06h)  
Pages Supported list (00h)  
Read Error Counter page (03h)  
Read Reverse Error Counter page (04h)  
Self-test Results page (10h)  
Start-stop Cycle Counter page (0Eh)  
Temperature page (0Dh)  
N
N
Y
Y
Y
N
Y
Y
Y
Verify Error Counter page (05h)  
Write error counter page (02h)  
Mode Select (same pages as Mode Sense 1Ah)  
Mode Select (10) (same pages as Mode Sense 1Ah)  
Mode Sense  
Y
Y
15h  
55h  
1Ah  
Y [2]  
Y
Y [2]  
Y
Caching Parameters page (08h)  
Control Mode page (0Ah)  
Y
Disconnect/Reconnect (02h)  
Error Recovery page (01h)  
Format page (03h)  
Y
Y
Y
Information Exceptions Control page (1Ch)  
Backgound Scan mode subpage (01h)  
Notch and Partition Page (0Ch)  
Protocol-Specific Port page (19h)  
Power Condition page (1Ah)  
Rigid Disc Drive Geometry page (04h)  
Unit Attention page (00h)  
Y
Y
N
Y
Y
Y
Y
Verify Error Recovery page (07h)  
Xor Control page (10h)  
Y
N
Y
Mode Sense (10) (same pages as Mode Sense 1Ah)  
Persistent Reserve In  
5Ah  
5Eh  
5Fh  
34h  
08h  
28h  
Y
Persistent Reserve Out  
Y
Prefetch  
N
Y
Read (6)  
Read (10)  
Y
DPO bit supported  
Y
FUA bit supported  
Y
Read (12)  
A8h  
N
N
N
Read (16)  
88h  
Read (32)  
7Fh/0009h  
Savvio 10K.4 SAS Product Manual, Rev. A  
51  
Table 7:  
Supported commands  
Command name  
Command code  
3Ch  
Supported  
Read Buffer (modes 0, 2, 3, Ah and Bh supported)  
Read Capacity (10)  
Read Capacity (16)  
Read Defect Data (10)  
Read Defect Data (12)  
Read Long  
Y (non-SED drives only)  
25h  
Y
9Eh/10h  
37h  
N
Y
B7h  
Y
3Eh  
Y (non-SED drives only)  
Read Long (16)  
9Eh/11h  
07h  
N
Reassign Blocks  
Y
Receive Diagnostic Results  
Supported Diagnostics pages (00h)  
Translate page (40h)  
Release  
1Ch  
Y
Y
Y
17h  
57h  
A0h  
03h  
Y
Release (10)  
Y
Report LUNs  
Y
Request Sense  
Y
Actual Retry Count bytes  
Extended Sense  
Y
Y
Field Pointer bytes  
Reserve  
Y
16h  
56h  
Y
3rd Party Reserve  
Extent Reservation  
Reserve (10)  
Y
N
Y
3rd Party Reserve  
Extent Reservation  
Rezero Unit  
Y
N
01h  
31h  
30h  
32h  
A2h  
B5h  
0Bh  
2Bh  
1Dh  
Y
Search Data Equal  
Search Data High  
Search Data Low  
N
N
N
Security Protocol In  
Security Protocol Out  
Seek (6)  
Y (SED models only)  
Y (SED models only)  
Y
Y
Y
Y
Y
N
Y
Y
N
Seek (10)  
Send Diagnostics  
Supported Diagnostics pages (00h)  
Translate page (40h)  
Set Limits  
33h  
1Bh  
35h  
91h  
Start Unit/Stop Unit (spindle ceases rotating)  
Synchronize Cache  
Synchronize Cache (16)  
52  
Savvio 10K.4 SAS Product Manual, Rev. A  
Table 7:  
Supported commands  
Command name  
Command code  
Supported  
Test Unit Ready  
00h  
2Fh  
Y
Verify (10)  
Y
BYTCHK bit  
Y
Verify (12)  
AFh  
N
Verify (16)  
AFh  
N
Verify (32)  
7Fh/000Ah  
0Ah  
N
Write (6)  
Y
Write (10)  
2Ah  
Y
DPO bit  
Y
FUA bit  
Y
Write (12)  
AAh  
N
Write (16)  
8Ah  
N
Write (32)  
7Fh/000Bh  
2Eh  
N
Write and Verify (10)  
Y
DPO bit  
Y
Write and Verify (12)  
AEh  
N
Write and Verify (16)  
8Eh  
N
Write and Verify (32)  
7Fh/000Ch  
3Bh  
N
Write Buffer (modes 0, 2, supported)  
Y (non-SED drives only)  
Write Buffer  
3Bh  
Firmware Download option (modes 5, 7, Ah and Bh) [3]  
Y (non-SED drives only)  
Firmware Download option (modes 4, 5, 7)  
Y (SED drives only)  
Write Long (10)  
Write Long (16)  
Write Same (10)  
PBdata  
3Fh  
Y
N
Y
N
N
N
N
N
N
N
9Fh/11h  
41h  
LBdata  
Write Same (16)  
Write Same (32)  
XDRead  
93h  
7Fh/000Dh  
52h  
XDWrite  
50h  
XPWrite  
51h  
[1] Savvio drives can format to 512, 520, 524 or 528 bytes per logical block.  
[2] Warning. Power loss during flash programming can result in firmware corruption. This usually makes the  
drive 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.  
Savvio 10K.4 SAS Product Manual, Rev. A  
53  
   
10.3.1  
Inquiry data  
Table 8 lists the Inquiry command data that the drive should return to the initiator per the format given in the  
SAS Interface Manual.  
Table 8:  
Savvio inquiry data  
Data (hex)  
Bytes  
0-15  
00  
[53  
R#  
00  
00  
00  
00  
00  
54  
R#  
00  
00  
00  
43  
xx** 12  
8B  
30  
S#  
00  
00  
00  
79  
53  
74  
01  
30  
S#  
00  
00  
00  
72  
65  
73  
PP  
32  
S#  
00  
00  
00  
69  
61  
20  
02  
30  
S#  
00  
00  
00  
67  
67  
72  
53  
34  
S#  
00  
00  
00  
68  
61  
65  
45  
53  
S#  
00  
00  
00  
74  
74  
73  
41  
53]  
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  
36  
R#  
00  
00  
00  
70  
20  
68  
32* *Copyright  
30* 30* 39*  
72 69 67  
20  
20  
notice  
*
Copyright year (changes with actual year).  
SCSI Revision support. See the appropriate SPC release documention for definitions.  
**  
PP 10 = Inquiry data for an Inquiry command received on Port A.  
30 = 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 16 through 26 reflect model of drive. The table above shows the hex values for Model ST9600204SS.  
Refer to the values below for the values of bytes 16 through 26 of you particular model:  
ST9600204SS  
ST9600104SS  
ST9450404SS  
ST9450304SS  
53 54 39 36 30 30 32 30 34 53 53  
53 54 39 36 30 30 31 30 34 53 53  
53 54 39 34 35 30 34 30 34 53 53  
53 54 39 34 35 30 33 30 34 53 53  
10.3.2  
Mode Sense data  
The Mode Sense command provides a way for the drive to report its operating parameters to the initiator. The  
drive maintains four sets of mode parameters:  
1. Default values  
Default values are hard-coded in the drive firmware stored in flash E-PROM (nonvolatile memory) on the  
drive’s PCB. These default values can be changed only by downloading a complete set of new firmware  
into the flash E-PROM. An initiator can request and receive from the drive a list of default values and use  
those in a Mode Select command to set up new current and saved values, where the values are change-  
able.  
2. Saved values  
Saved values are stored on the drive’s media using a Mode Select command. Only parameter values that  
are allowed to be changed can be changed by this method. Parameters in the saved values list that are not  
changeable by the Mode Select command get their values from default values storage.  
When power is applied to the drive, it takes saved values from the media and stores them as current val-  
ues in volatile memory. It is not possible to change the current values (or the saved values) with a Mode  
Select command before the drive achieves operating speed and is “ready.” An attempt to do so results in a  
“Check Condition” status.  
54  
Savvio 10K.4 SAS Product Manual, Rev. A  
         
On drives requiring unique saved values, the required unique saved values are stored into the saved val-  
ues storage location on the media prior to shipping the drive. Some drives may have unique firmware with  
unique default values also.  
On standard OEM drives, the saved values are taken from the default values list and stored into the saved  
values storage location on the media prior to shipping.  
3. Current values  
Current values are volatile values being used by the drive to control its operation. A Mode Select command  
can be used to change the values identified as changeable values. Originally, current values are installed  
from saved or default values after a power on reset, hard reset, or Bus Device Reset message.  
4. Changeable values  
Changeable values form a bit mask, stored in nonvolatile memory, that dictates which of the current values  
and saved values can be changed by a Mode Select command. A one (1) indicates the value can be  
changed. A zero (0) indicates the value is not changeable. For example, in Table 9, refer to Mode page 81,  
in the row entitled “CHG.” These are hex numbers representing the changeable values for Mode page 81.  
Note in columns 5 and 6 (bytes 04 and 05), there is 00h which indicates that in bytes 04 and 05 none of the  
bits are changeable. Note also that bytes 06, 07, 09, 10, and 11 are not changeable, because those fields  
are all zeros. In byte 02, hex value FF equates to the binary pattern 11111111. If there is a zero in any bit  
position in the field, it means that bit is not changeable. Since all of the bits in byte 02 are ones, all of these  
bits are changeable.  
The changeable values list can only be changed by downloading new firmware into the flash E-PROM.  
Note. Because there are often several different versions of drive control firmware in the total population of  
drives in the field, the Mode Sense values given in the following tables may not exactly match those  
of some drives.  
The following tables list the values of the data bytes returned by the drive in response to the Mode Sense com-  
mand pages for SCSI implementation (see the SAS Interface Manual).  
DEF = Default value. Standard OEM drives are shipped configured this way.  
CHG = Changeable bits; indicates if default value is changeable.  
Savvio 10K.4 SAS Product Manual, Rev. A  
55  
Table 9:  
Mode Sense data for ST9600204SS and ST9600104SS drives  
MODE DATA HEADER:  
01 92 00 10 00 00 00 08  
BLOCK DESCRIPTOR:  
45 dd 2f b0 00 00 02 00  
MODE PAGES:  
DEF 81 0a c0 0c ff 00 00 00 05 00 ff ff  
CHG 81 0a ff ff 00 00 00 00 ff 00 ff ff  
DEF 82 0e 00 00 00 00 00 00 00 00 01 3a 00 00 00 00  
CHG 82 0e 00 00 00 00 00 00 00 00 ff ff 00 00 00 00  
DEF 83 16 bb d0 00 00 00 00 03 80 04 c4 02 00 00 01 00 ba 00 24 40 00 00 00  
CHG 83 16 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  
DEF 84 16 02 23 55 06 00 00 00 00 00 00 00 00 00 00 00 00 00 00 27 31 00 00  
CHG 84 16 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  
DEF 87 0a 00 0c ff 00 00 00 00 00 ff ff  
CHG 87 0a 0f ff 00 00 00 00 00 00 ff ff  
DEF 88 12 14 00 ff ff 00 00 ff ff ff ff 80 20 00 00 00 00 00 00  
CHG 88 12 a5 00 00 00 ff ff ff ff 00 00 20 00 00 00 00 00 00 00  
DEF 8a 0a 02 00 00 80 00 00 00 00 18 20  
CHG 8a 0a 03 f6 00 00 00 00 00 00 00 00  
DEF 18 06 06 00 00 00 00 00  
CHG 18 06 00 00 00 00 00 00  
DEF 99 0e 06 00 07 d0 00 00 00 00 00 00 00 00 00 00  
CHG 99 0e 10 00 ff ff ff ff 00 00 00 00 00 00 00 00  
DEF 9a 26 00 00 00 00 00 0a 00 00 8c a0 00 00 17 70 00 00 46 50 00 00 46 50 00 00  
00 00 00 00 00 00 00 00 00 00 00 00 00 00  
CHG 9a 26 01 0f ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff 00 00  
00 00 00 00 00 00 00 00 00 00 00 00 00 00  
DEF 9c 0a 10 00 00 00 00 00 00 00 00 01  
CHG 9c 0a 9d 0f ff ff ff ff ff ff ff ff  
DEF 80 06 00 80 0f 00 00 00  
CHG 80 06 b7 c0 8f 00 00 00  
56  
Savvio 10K.4 SAS Product Manual, Rev. A  
   
Table 10:  
Mode Sense values for ST9450404SS and ST9450304SS drives  
MODE DATA HEADER:  
01 92 00 10 00 00 00 08  
BLOCK DESCRIPTOR:  
34 65 f8 70 00 00 02 00  
MODE PAGES:  
DEF 81 0a c0 0c ff 00 00 00 05 00 ff ff  
CHG 81 0a ff ff 00 00 00 00 ff 00 ff ff  
DEF 82 0e 00 00 00 00 00 00 00 00 01 3a 00 00 00 00  
CHG 82 0e 00 00 00 00 00 00 00 00 ff ff 00 00 00 00  
DEF 83 16 bb d0 00 00 00 00 03 80 04 c4 02 00 00 01 00 ba 00 24 40 00 00 00  
CHG 83 16 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  
DEF 84 16 02 23 55 06 00 00 00 00 00 00 00 00 00 00 00 00 00 00 27 31 00 00  
CHG 84 16 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  
DEF 87 0a 00 0c ff 00 00 00 00 00 ff ff  
CHG 87 0a 0f ff 00 00 00 00 00 00 ff ff  
DEF 88 12 14 00 ff ff 00 00 ff ff ff ff 80 20 00 00 00 00 00 00  
CHG 88 12 a5 00 00 00 ff ff ff ff 00 00 20 00 00 00 00 00 00 00  
DEF 8a 0a 02 00 00 80 00 00 00 00 10 40  
CHG 8a 0a 03 f6 00 00 00 00 00 00 00 00  
DEF 18 06 06 00 00 00 00 00  
CHG 18 06 00 00 00 00 00 00  
DEF 99 0e 06 00 07 d0 00 00 00 00 00 00 00 00 00 00  
CHG 99 0e 10 00 ff ff ff ff 00 00 00 00 00 00 00 00  
DEF 9a 26 00 00 00 00 00 0a 00 00 8c a0 00 00 17 70 00 00 46 50 00 00 46 50 00 00  
00 00 00 00 00 00 00 00 00 00 00 00 00 00  
CHG 9a 26 01 0f ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff 00 00  
00 00 00 00 00 00 00 00 00 00 00 00 00 00  
DEF 9c 0a 10 00 00 00 00 00 00 00 00 01  
CHG 9c 0a 9d 0f ff ff ff ff ff ff ff ff  
DEF 80 06 00 80 0f 00 00 00  
CHG 80 06 b7 c0 8f 00 00 00  
Savvio 10K.4 SAS Product Manual, Rev. A  
57  
10.4  
Miscellaneous operating features and conditions  
Table 11 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 11:  
Miscellaneous features  
Supported  
Feature or condition  
Automatic contingent allegiance  
Asynchronous event notification  
N
N
N
Y
N
Y
Y
Y
Y
N
Y
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 12:  
Miscellaneous status  
Supported  
Status  
Good  
Y
Y
Y
Y
Y
Y
Y
Y
N
N
Check condition  
Condition met/good  
Busy  
Intermediate/good  
Intermediate/condition met/good  
Reservation conflict  
Task set full  
ACA active  
ACA active, faulted initiator  
58  
Savvio 10K.4 SAS Product Manual, Rev. A  
                                             
10.4.1  
SAS physical interface  
Figure 27 shows the location of the SAS device connector J1. Figures 28 and 29 provide the dimensions of the  
SAS connector.  
Details of the physical, electrical, and logical characteristics are provided within this section. The operational  
aspects of Seagate’s SAS drives are provided in the SAS Interface Manual..  
Figure 27. Physical interface  
Savvio 10K.4 SAS Product Manual, Rev. A  
59  
       
0.80 (6X)  
5.92  
7.62  
4.65  
0.52 0.08 x 45  
2.00 (3X)  
0.45 0.03 (7X)  
0.10 M E  
5.08  
42.73 REF.  
41.13 0.15  
0.20B  
0.30 0.05 (2X)  
C
A
B
1.10  
4.00 0.08  
0.15D  
C OF DATUM D  
L
R0.30 0.08 (4X)  
A
0.30 0.05 (4X)  
B
C
SEE Detail1  
B
33.43 0.05  
15.875  
15.875  
1.27 (14X)  
1.27 (6X)  
0.84 0.05 (22X)  
5.08  
0.15B  
4.90 0.08  
0.35MIN  
P15  
S1  
P1  
S7  
C OF DATUM B  
L
Figure 28. SAS device plug dimensions  
60  
Savvio 10K.4 SAS Product Manual, Rev. A  
 
Detail A  
6.10  
S14  
S8  
0.30 0.05 x 45 (5X)  
2.25 0.05  
0.40 0.05 X 45 (3X)  
4.85 0.05  
0.10B  
CORING ALLOWED  
IN THIS AREA.  
E
4.40 0.15  
R0.30 0.08  
45  
C
SEE Detail 2  
1.95 0.08  
A
0.35 0.05  
SECTION C - C  
3.90 0.15  
SECTION A - A  
CONTACT SURFACE FLUSH  
TO DATUM A 0.03  
0.08 0.05  
65  
1.90 0.08  
1.23 0.05  
0.08 0.05  
30  
Detail 2  
2.40 0.08  
0.10 A  
SECTION B - B  
D
Figure 29. SAS device plug dimensions (detail)  
Savvio 10K.4 SAS Product Manual, Rev. A  
61  
 
10.4.2  
Physical characteristics  
This section defines physical interface connector.  
10.4.3  
Connector requirements  
Contact your preferred connector manufacturer for mating part information. Part numbers for SAS connectors  
will be provided in a future revision of this publication when production parts are available from major connec-  
tor manufacturers.  
The SAS device connector is illustrated in Figures 28 and 29.  
10.4.4  
Electrical description  
SAS drives use the device connector for:  
• DC power  
• SAS interface  
• Activity LED  
This connector is designed to either plug directly into a backpanel or accept cables.  
10.4.5  
Pin descriptions  
This section provides a pin-out of the SAS device and a description of the functions provided by the pins.  
Table 13:  
SAS pin descriptions  
Pin  
S1  
Signal name Signal type  
Pin  
P1*  
P2*  
P3  
Signal name  
NC (reserved 3.3Volts)  
NC (reserved 3.3Volts)  
NC (reserved 3.3Volts)  
Ground  
Signal type  
Port A Ground  
+Port A_in  
S2*  
S3*  
S4  
Diff. input pair  
Diff output pair  
-Port A_in  
Port A Ground  
-Port A_out  
+Port A_out  
Port A Ground  
Port B Ground  
+Port B_in  
P4  
S5*  
S6*  
S7  
P5  
Ground  
P6  
Ground  
P7  
5 Volts charge  
5 Volts  
S8  
P8*  
P9*  
P10  
P11*  
P12  
P13  
P14*  
P15*  
S9*  
S10*  
S11  
S12*  
S13*  
S14  
Diff. input pair  
Diff output pair  
5 Volts  
-Port B_in  
Ground  
Port A Ground  
-Port B_out  
+Port B_out  
Port B Ground  
Ready LED  
Ground  
Open collector out  
12 Volts charge  
12 Volts  
12 Volts  
* - Short pin to support hot plugging  
NC - No connection in the drive.  
62  
Savvio 10K.4 SAS Product Manual, Rev. A  
                           
10.4.6  
SAS transmitters and receivers  
A typical SAS differential copper transmitter and receiver pair is shown in Figure 30. The receiver is AC cou-  
pling to eliminate ground shift noise.  
.01  
TX  
TY  
RX  
Differential  
Transfer Medium  
Transmitter  
100  
Receiver  
100  
RY  
.01  
Figure 30. SAS transmitters and receivers  
10.4.7 Power  
The drive receives power (+5 volts and +12 volts) through the SAS device connector.  
Three +12 volt pins provide power to the drive, 2 short and 1 long. The current return for the +12 volt power  
supply is through the common ground pins. The supply current and return current must be distributed as  
evenly as possible among the pins.  
Three +5 volt pins provide power to the drive, 2 short and 1 long. The current return for the +5 volt power sup-  
ply is through the common ground pins. The supply current and return current must be distributed as evenly as  
possible among the pins.  
Current to the drive through the long power pins may be limited by the system to reduce inrush current to the  
drive during hot plugging.  
10.5  
Signal characteristics  
This section describes the electrical signal characteristics of the drive’s input and output signals. See Table 13  
for signal type and signal name information.  
10.5.1  
Ready LED Out  
The Ready LED Out signal is driven by the drive as indicated in Table 14.  
Table 14:  
Ready LED Out conditions  
Normal command activity  
LED status  
Ready LED Meaning bit mode page 19h  
Spun down and no activity  
0
1
Off  
On  
On  
Off  
Off  
On  
Off  
On  
Spun down and activity (command executing)  
Spun up and no activity  
Spun up and activity (command executing)  
Spinning up or down  
Blinks steadily  
(50% on and 50% off, 0.5 seconds on and off for 0.5 seconds)  
Format in progress, each cylinder change  
Toggles on/off  
Savvio 10K.4 SAS Product Manual, Rev. A  
63  
                               
The Ready LED Out signal is designed to pull down the cathode of an LED. The anode is attached to the  
proper +3.3 volt supply through an appropriate current limiting resistor. The LED and the current limiting resis-  
tor are external to the drive. See Table 15 for the output characteristics of the LED drive signals.  
Table 15:  
LED drive signal  
State  
Test condition  
0 V VOH 3.6 V  
= 15 mA  
Output voltage  
LED off, high  
LED on, low  
-100 µA < I < 100 µA  
OH  
I
0 VOL 0.225 V  
OL  
10.5.2  
Differential signals  
The drive SAS differential signals comply with the intra-enclosure (internal connector) requirements of the SAS  
standard.  
Table 16 defines the general interface characteristics  
Table 16:  
General interface characteristics  
Characteristic  
Units  
Mbaud  
ps  
1.5Gb/s  
1,500  
666.6  
100  
3.0Gb/s  
3,000  
333.3  
100  
6.0Gb/s  
6,000  
166.6  
100  
Bit rate (nominal)  
Unit interval (UI)(nominal)  
Impedance (nominal, differential )  
Transmitter transients, maximum  
Receiver transients, maximum  
ohm  
V
1.2  
1.2  
1.2  
V
1.2  
1.2  
1.2  
10.6  
SAS-2 Specification compliance  
Seagate SAS-2 drives are entirely compatible with the latest SAS-2 Specification (T10/1760-D) Revision 16.  
The most important characteristic of the SAS-2 drive at 6Gb/s is that the receiver is capable of adapting the  
equalizer to optimize the receive margins. The SAS-2 drive has two types of equalizers:  
1. A Decision Feedback Equalizer (DFE) which utilizes the standard SAS-2 training pattern transmitted dur-  
ing the SNW-3 training gap. The DFE circuit can derive an optimal equalization characteristic to compen-  
sate for many of the receive losses in the system.  
2. A Feed Forward Equalizer (FFE) optimized to provide balanced receive margins over a range of channels  
bounded by the best and worst case channels as defined by the relevant ANSI standard.  
10.7  
Additional information  
Please contact your Seagate representative for SAS electrical details, if required.  
For more information about the Phy, Link, Transport, and Applications layers of the SAS interface, refer to the  
Seagate SAS Interface Manual, part number 100293071.  
For more information about the SCSI commands used by Seagate SAS drives, refer to the Seagate SCSI  
Commands Reference Manual, part number 100293068.  
64  
Savvio 10K.4 SAS Product Manual, Rev. A  
                       
11.0  
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 10K.4 SAS Product Manual, Rev. A  
65  
   
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 dialFAX  
USA, Canada,  
and Mexico  
1-800-475-01435  
+1-905-474-21621-800-475-0158  
+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.  
66  
Savvio 10K.4 SAS Product Manual, Rev. A  
C
Index  
cache operation 11  
cache segments 11  
caching write data 11  
Canadian Department of Communications 2  
capacity  
Numerics  
12 volt  
pins 63  
5 volt pins 63  
6 Gbps 64  
unformatted 9  
case temperature 31  
CBC 38  
CE Marking 3  
A
check condition status 58  
Cipher Block Chaining 38  
class B limit 2  
clear ACA function 48  
clear task set function 48  
commands supported 50  
condensation 32  
condition met/good status 58  
connector  
illustrated 62  
requirements 62  
continuous vibration 35  
cooling 46  
CRC  
abort task set function 48  
AC coupling 63  
AC power requirements 21  
ACA active status 58  
ACA active, faulted initiator status 58  
acoustics 36  
active LED Out signal 63  
actuator 7  
assembly design 5  
adaptive caching 58  
Admin SP 38  
AES-128 data encryption 38  
AFR 31  
air cleanliness 35  
Air flow 31  
air flow 46  
error 14  
Cryptographic erase 40  
Current profiles 26  
customer service 19  
illustrated 46  
air inlet 46  
altitude 32  
ambient 32  
D
ambient temperature 31, 46  
DAR 43  
Data Bands 39  
data bands 38  
ANSI documents  
SCSI 4  
Serial Attached SCSI 4  
asynchronous event notification 58  
audible noise 2  
auto write and read reallocation  
programmable 6  
automatic contingent allegiance 58  
average idle current 22, 23  
average rotational latency 9  
data block size  
modifing the 7  
data buffer to/from disc media 10  
Data encryption 38  
Data Encryption Key 38  
data heads  
read/write 9  
data rate  
internal 9  
data transfer rate 10  
DC power 62  
requirements 21  
Decision Feedback Equalizer 64  
decrypt 38  
default MSID password 39  
defects 41  
Deferred Auto-Reallocation 43  
deferred error handling 58  
DEK 38  
B
Background Media Scan 43  
backpanel 62  
Band 0 39  
BandMasterX 39  
BMS 43  
buffer  
data 6  
space 11  
busy status 58  
bytes per surface 9  
bytes per track 9  
description 5  
DFE 64  
Savvio 10K.4 SAS Product Manual, Rev. A  
67  
dimensions 37  
disc rotation speed 9  
drive 35  
drive characteristics 9  
drive failure 14  
Good status 58  
gradient 32  
ground shift noise 63  
grounding 47  
Drive Locking 39  
drive mounting 37, 47  
drive select 62  
H
HDA 46, 47  
heads  
dual port support 49  
read/write data 9  
heat removal 46  
heat source 46  
E
electrical  
description of connector 62  
signal characteristics 63  
specifications 20  
host equipment 47  
hot plugging the drive 14  
humidity 32  
electromagnetic compatibility 2  
Electromagnetic Compatibility (EMC) 3  
Electromagnetic Compatibility control Regulation 3  
electromagnetic susceptibility 36  
EMI requirements 2  
encryption engine 38  
encryption key 39  
humidity limits 31  
I
Idle Read After Write 44  
Idle1 20  
Idle2 20  
Idle3 20  
inquiry data 54  
installation 45  
environment 46  
environmental  
limits 31  
requirements 13  
environmental control 35  
EraseMaster 39  
error  
management 41  
rates 13  
errors 41  
guide 4  
interface  
commands supported 50  
error rate 13  
errors 14  
illustrated 59  
physical 59  
requirements 48  
interleave  
European Union Restriction of Hazardous Substanc-  
es 4  
minimum 10  
intermediate/condition met/good status 58  
intermediate/good status 58  
internal data rate 9  
internal defects/errors 41  
internal drive characteristics 9  
IRAW 44  
F
FCC rules and regulations 2  
features 6  
interface 48  
feed forward equalizer 64  
FFE 64  
firmware 6  
J
corruption 53  
jumpers 45  
firmware download port 39  
flawed sector reallocation 6  
Format command execution time 10  
front panel 37  
K
KCC 3  
function  
Korean Communications Commission 3  
complete, code 00 48  
not supported, code 05 48  
reject, code 04 48  
L
latency  
average rotational 9, 10  
Locking SP 38, 39  
LockOnReset 39  
G
Global Data Band 39  
68  
Savvio 10K.4 SAS Product Manual, Rev. A  
logical block address 11  
logical block reallocation scheme 6  
logical block size 6, 10  
logical segments 11  
temperature 32  
non-operating vibration 35  
O
office environment 35  
operating 32, 33, 35  
option selection 62  
options 8  
M
maintenance 13  
Makers Secure ID 38  
maximum delayed motor start 22, 23  
maximum start current 22, 23  
maximum temperature 31  
media description 6  
out-of-plane distortion 47  
P
package size 34  
package test specification 4  
packaged 34  
parameter rounding 58  
password 38, 39  
passwords 39  
Media Pre-Scan 43  
minimum sector interleave 10  
miscellaneous feature support  
Adaptive caching 58  
Asynchronous event notification 58  
Automatic contingent allegiance 58  
Deferred error handling 58  
Parameter rounding 58  
Queue tagging 58  
Reporting actual retry count 58  
Segmented caching 58  
SMP = 1 in Mode Select command 58  
Synchronized (locked) spindle operation 58  
Zero latency read 58  
PCBA 47  
peak bits per inch 9  
peak operating current 22, 23  
peak-to-peak measurements 25  
performance characteristics  
detailed 9  
general 10  
performance highlights 7  
physical damage 35  
physical interface 59  
physical specifications 20  
pin descriptions 62  
miscellaneous status support  
ACA active 58  
ACA active, faulted initiator 58  
Busy 58  
Check condition 58  
Condition met/good 58  
Good 58  
Intermediate/condition met/good 58  
Intermediate/good 58  
power 63  
dissipation 28  
requirements, AC 21  
requirements, DC 21  
sequencing 25  
Power Condition mode page 20  
power distribution 2  
power management 20  
PowerChoice 20  
PowerChoice reports 21  
PowerCycle 39  
prefetch/multi-segmented cache control 11  
preventive maintenance 13  
protection of data at rest 38  
Reservation conflict 58  
Task set full 58  
miscorrected media data 13  
Mode sense  
data, table 54, 56  
mounting 47  
holes 47  
orientations 45  
mounting configuration 37  
mounting configuration dimensions 37  
MSID 38, 39  
Q
queue tagging 58  
MTBF 13, 14  
R
N
radio interference regulations 2  
Random number generator 39  
RCD bit 11  
noise  
audible 2  
noise immunity 25  
non-operating 32, 33, 35  
read error rates 13, 41  
read/write data heads 9  
Savvio 10K.4 SAS Product Manual, Rev. A  
69  
receivers 63  
characteristics 63  
single-unit shipping pack kit 8  
SMART 7, 15  
SMP = 1 in Mode Select command 58  
SNW-3 training gap 64  
Specification 64  
recommended mounting 34  
Recoverable Errors 13  
recovered media data 13  
reference  
documents 4  
relative humidity 32  
reliability 7  
spindle brake 6  
standards 2  
specifications 13  
Standby1 20  
reliability and service 14  
repair and return information 19  
reporting actual retry count 58  
reservation conflict status 58  
resonance 32  
Standby2 20  
START STOP UNIT command 20  
start/stop time 10  
support services 65  
surface stiffness  
return information 19  
RNG 39  
allowable for non-flat surface 47  
switches 45  
RoHS 4  
rotation speed 9  
synchronized spindle  
operation 58  
system chassis 47  
S
T
safety 2  
SAS  
task management functions 48  
Abort task set 48  
interface 62  
physical interface 59  
task management functions 48  
SAS documents 4  
SAS Interface Manual 2, 4  
SAS-2 Specification 64  
SCSI interface  
commands supported 50  
Secure ID 38  
security partitions 38  
Security Protocol In 38  
Security Protocol Out 38  
seek error  
Clear ACA 48  
Clear task set 48  
terminate task 48  
task management response codes 48  
Function complete 00 48  
Function not supported 05 48  
Function reject 04 48  
task set full status 58  
TCG 38  
technical support services 65  
temperature 31, 46  
limits 31  
defined 14  
non-operating 32  
rate 13  
regulation 2  
seek performance characteristics 9  
seek time  
See also cooling  
terminate task function 48  
terminators 45  
tracks per inch 9  
tracks per surface 9  
transmitters 63  
average typical 9  
full stroke typical 9  
single track typical 9  
segmented caching 58  
self-encrypting drives 38  
transporting the drive 19  
Self-Monitoring Analysis and Reporting Technology Trusted Computing Group 38  
Serial Attached SCSI (SAS) Interface Manual 1  
shielding 2  
U
unformatted 7  
shipping 19  
Unrecoverable Errors 13  
shipping container 32  
unrecovered media data 13  
shock 33  
and vibration 32  
shock mount 47  
V
SID 38  
signal  
vibration 32, 35  
70  
Savvio 10K.4 SAS Product Manual, Rev. A  
W
warranty 19  
Z
zero latency read 58  
zone bit recording (ZBR) 6  
Savvio 10K.4 SAS Product Manual, Rev. A  
71  
72  
Savvio 10K.4 SAS Product Manual, Rev. A  
Seagate Technology LLC  
920 Disc Drive, Scotts Valley, California 95066-4544, USA  
Publication Number: 100539221, Rev. A, Printed in USA  

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