Seagate Computer Drive 4096 User Guide

Enterprise  
Capacity 2.5 HDD  
SAS Product Manual  
Standard  
Models  
Self-Encrypting SED FIPS140-2  
Drive Models  
Models  
4096 ST2000NX0263  
ST2000NX0323  
ST1000NX0363  
ST2000NX0333  
Native  
ST1000NX0323  
ST2000NX0273  
Emulation ST1000NX0333  
ST2000NX0343  
ST1000NX0373  
ST2000NX0353  
512  
512  
Native  
ST2000NX0433  
ST1000NX0453  
100751316, Rev. D  
July 2015  
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CONTENTS  
6.1  
PowerChoiceTM power management. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22  
6.3  
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CONTENTS  
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CONTENTS  
11.7  
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FIGURES  
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®
Seagate Technology Support Services  
For information regarding online support and services, visit: http://www.seagate.com/contacts/  
Available services include:  
Presales & Technical support  
Global Support Services telephone numbers & business hours  
Authorized Service Centers  
For information regarding data recovery services, visit: http://www.seagate.com/services-software/data-recovery-services/  
Seagate Enterprise Capacity 2.5 HDD v3 SAS Product Manual, Rev. D  
6
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1.0 Scope  
®
This manual describes Seagate Enterprise Capacity 2.5 HDD v3 SAS (Serial Attached SCSI) disk drives.  
Enterprise Capacity 2.5 HDD v3 drives support the SAS Protocol specifications to the extent described in this manual. The SAS Interface  
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.  
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 integrators are designing a system which will use one of the models  
listed or future generation products and need further assistance, please contact the Field Applications Engineer (FAE) or our global  
Unless otherwise stated, the information in this manual applies to standard and Self-Encrypting Drive models.  
Sector  
Size  
Standard  
models  
Self-Encrypting Drive  
(SED) models  
FIPS 140-2 Level 2  
(SED-FIPS) models  
ST2000NX0263  
ST1000NX0323  
ST2000NX0273  
ST1000NX0333  
ST2000NX0433  
ST1000NX0453  
ST2000NX0323  
ST1000NX0363  
ST2000NX0343  
ST1000NX0373  
ST2000NX0333  
4096N  
512E  
512N  
ST2000NX0353  
Throughout this manual, 512E represents 512 “emulation” sector drives,  
512N represents 512 “native” sector drives and 4096N represents 4096  
“native” sector drives.  
Note  
Note  
Note  
Previous generations of Seagate Self-Encrypting Drive models were  
called Full Disk Encryption (FDE) models before a differentiation between  
drive-based encryption and other forms of encryption was necessary  
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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 temperature regulation. In particular, the drives must be securely mounted to guarantee the specified  
2.1  
Standards  
The Enterprise Capacity 2.5 HDD v3 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, CSA 60950-1, and EN60950-1.  
The security features of Self-Encrypting Drive models are based on the “TCG Storage Architecture Core Specification” and the “TCG  
Storage Workgroup Security Subsystem Class: Enterprise_A” specification with additional vendor-unique features as noted in this product  
manual.  
2.1.1  
Electromagnetic compatibility  
The drive, as delivered, is designed for system integration and installation into a suitable enclosure prior to use. The drive is supplied as a  
subassembly and is not subject to Subpart B of Part 15 of the FCC Rules and Regulations.  
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 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 susceptibility drive was tested in a representative system for typical applications. 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 Section  
2.1.2  
Electromagnetic compliance  
Seagate uses an independent laboratory to confirm compliance with the directives/standards for CE Marking and RCM Marking. The drive  
was tested in a representative system for typical applications and comply with the Electromagnetic Interference/Electromagnetic  
Susceptibility (EMI/EMS) for Class B products.  
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.  
Canada ICES-003  
If this model has the ICES-003 Marking it complies with the Canadian Standard Association Standard CAN/CSA-CISPR 22-10, Information  
Technology Equipment - Radio Disturbance Characteristics - Limits and Methods of Measurement.  
Australian RCM Mark  
If this model has the RCM Marking it complies with the Australia/New Zealand Standard AS/NZ CISPR22 and meets the Electromagnetic  
Compatibility (EMC) Framework requirements of Australia’s Radiocommunications Act.  
Korean KCC  
If these drives have the Korean Communications Commission (KCC) logo, they comply with KN22, KN 24, and KN61000.  
Taiwanese BSMI  
If this model has the Taiwanese certification mark then it complies with Chinese National Standard, CNS13438.  
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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 representations of our suppliers  
regarding the presence of RoHS substances in these parts and materials. Our supplier contracts require compliance with our chemical  
substance restrictions, and our suppliers document their compliance with our requirements by providing material content declarations for  
all parts and materials for the disk drives documented in this publication. Current supplier declarations include disclosure of the inclusion of  
any RoHS-regulated substance in such parts or materials.  
Seagate also has internal systems in place to ensure ongoing compliance with the RoHS Directive and all laws and regulations which  
restrict chemical content in electronic products. These systems include standard operating procedures that ensure that restricted  
substances are not utilized in our manufacturing operations, laboratory analytical validation testing, and an internal auditing process to  
ensure that all standard operating procedures are complied with.  
2.1.4  
China Restriction of Hazardous Substances (RoHS) Directive  
This product has an Environmental Protection Use Period (EPUP) of 20 years. The following table contains information  
mandated by China's "Marking Requirements for Control of Pollution Caused by Electronic Information Products" Standard.  
"O" indicates the hazardous and toxic substance content of the part (at the homogeneous material level) is lower than the threshold  
defined by the China RoHS MCV Standard.  
"X" indicates the hazardous and toxic substance content of the part (at the homogeneous material level) is over the threshold defined by  
the China RoHS MCV Standard.  
2.2  
Reference documents  
SAS Interface Manual  
Seagate part number: 100293071  
Seagate part number: 100293068  
SCSI Commands Reference Manual  
Self-Encrypting Drives Reference Manual  
Seagate part number: 100515636  
ANSI SAS Documents  
SFF-8223 2.5” Drive Form Factor with Serial Connector  
SFF-8460 HSS Backplane Design Guidelines  
SFF-8470 Multi Lane Copper Connector  
SFF-8482 SAS Plug Connector  
ANSI INCITS.xxx Serial Attached SCSI (SAS-2) Standard (T10/1562-D)  
ISO/IEC 14776-xxx SCSI Architecture Model-3 (SAM-4) Standard (T10/1561-D)  
ISO/IEC 14776-xxx SCSI Primary Commands-3 (SPC-4) Standard (T10/1416-D)  
ISO/IEC 14776-xxx SCSI Block Commands-2 (SBC-3) 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  
In case of conflict between this document and any referenced document, this document takes precedence.  
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3.0 General description  
Enterprise Capacity 2.5 HDD v3 SAS drives provide high performance, high capacity data storage for a variety of systems including  
engineering 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-density storage requirements.  
Enterprise Capacity 2.5 HDD v3 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. Enterprise Capacity 2.5 HDD v3 drives are classified as intelligent peripherals and provide level 2  
conformance (highest level) with the ANSI SCSI-1 standard. The SAS connectors, 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 disk drives. This allows  
integrators to continue to leverage existing investment in SCSI while gaining a 12Gb/s serial data transfer rate.  
The Self-Encrypting Drive models indicated on the cover of this product manual have provisions for “Security of Data at Rest” based on the  
standards defined by the Trusted Computing Group (see www.trustedcomputinggroup.org).  
The head and disk assembly (HDA) is sealed at the factory. Air recirculates within the HDA through a non-replaceable filter to maintain a  
contamination-free HDA environment.  
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 the warranty.  
Note  
Enterprise Capacity 2.5 HDD v3 drives use a dedicated load/unload zone at the outermost radius of the media to eliminate the possibility  
of destroying or degrading data by landing in the data zone. The heads automatically go to the ramp load/unload when power is removed  
from the drive and during the deeper sleep modes.  
An automatic shipping lock prevents potential damage to the heads and discs that results from movement during shipping and handling.  
The shipping lock disengages and the head load process begins when power is applied to the drive.  
These drives decode track 0 location data from the servo data embedded on each surface to eliminate mechanical transducer adjustments  
and related reliability concerns.  
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.  
3.1  
Standard features  
Enterprise Capacity 2.5 HDD drives have the following standard features:  
3.0 / 6.0 / 12.0 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 16 initiators  
NVC- backed write cache of approximately 334K  
Jumperless configuration  
User-selectable logical block sizes for 512E and 512N models (512, 520, 524 or 528 bytes per logical block)  
User-selectable logical block sizes for 4096N models (4096, 4160, 4192 or 4224 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 524 bits for 512 byte blocks and 4108 bits for 4k byte blocks  
No preventive maintenance or adjustments required  
Dedicated head load/unload zone and automatic shipping lock  
Embedded servo design  
Automatic shipping lock  
Self diagnostics performed when power is applied to the drive  
Zone bit recording (ZBR)  
Vertical, horizontal, or top down mounting  
Dynamic spindle brake  
128MB data buffer (see Section 4.5)  
Drive Self Test (DST)  
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Background Media Scan (BMS)  
Idle Read After Write (IRAW)  
Power Save  
SAS Power Disable  
Power Choice  
RAID Rebuild™  
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.  
3.3  
Performance  
Firmware-controlled multisegmented cache designed to dynamically adjust segments for enhanced system performance  
1200MB/s maximum instantaneous data transfers.  
7200RPM spindle.  
Average latency = 4.167ms  
Background processing of queue  
Supports start and stop commands (spindle stops spinning)  
Adaptive seek velocity; improved seek performance  
There is no significant performance difference between Self-Encrypting  
Drive and standard (non-Self-Encrypting Drive) models.  
Note  
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  
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3.5  
Formatted capacities  
Standard OEM models are formatted to 512 bytes per block for 512E (emulation) and 512N (native) drives and 4096 bytes per block for  
4096N (native) drives. The block size is selectable at format time. Supported block sizes are 512, 520, 524, and 528 for 512E and 512N  
drives and 4096, 4160, 4192, and 4224 for 4096N drives. 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:  
Capacity (Blocks)  
2TB  
1TB  
Sector Size  
Decimal  
Hex  
Decimal  
Hex  
3,907,029,168  
3,824,358,992  
3,773,385,336  
3,719,165,192  
488,378,646  
478,846,160  
472,805,344  
469,223,488  
E8E088B0  
E3F31650  
E0E94A78  
DDADF508  
1D1C1116  
1C8A9CD0  
1C2E6FE0  
1BF7C840  
512  
520  
1,953,525,168  
1,923,076,936  
1,882,972,568  
1,876,331,336  
244,190,646  
239,423,080  
236,402,672  
234,611,744  
74706DB0  
729FD348  
703BE198  
6FD68B48  
E8E0DB6  
E454E68  
E1737F0  
DFBE420  
524  
528  
4096  
4160  
4192  
4224  
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.  
3.7  
Factory-installed options  
The following items may be ordered 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 distribu-  
tion 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.  
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4.0 Performance characteristics  
This section provides detailed information concerning performance-related characteristics and features of Enterprise Capacity 2.5 HDD v3  
drives.  
4.1  
Internal drive characteristics  
2TB models  
1TB models  
Drive capacity  
Read/write data heads  
Bytes per track  
2000  
10  
979  
1000  
5
979  
GB (formatted, rounded off value)  
KBytes (avg, rounded off values)  
Bytes per surface  
Tracks per surface (total)  
Tracks per inch  
200,000  
197  
315  
200,000  
197  
315  
MB (unformatted, rounded off value)  
Ktracks (user accessible, rounded off values) (4096N, 512E or 512N)  
KTPI (average) (4096N, 512E or 512N)  
Peak bits per inch  
Areal density  
1889  
585  
1889  
585  
KBPI  
Gb/in2 (4096N, 512E or 512N)  
Disk rotation speed  
Avg rotational latency  
7.2K  
4.167  
7.2K  
4.167  
rpm  
ms  
4.2  
Performance characteristics  
4.2.1  
Format command execution time for 512-byte sectors (minutes)  
2TB models  
1TB models  
Maximum (with certify)  
652  
326  
326  
163  
Maximum (without certify)  
Execution time measured from receipt of the last byte of the Command Descriptor Block (CDB) to the request for a Status Byte Transfer to  
the Initiator (excluding connect/disconnect).  
When changing sector sizes, the format times shown above may need to be increased by 30 minutes.  
4.2.2  
General performance characteristics  
Sustained transfer rate  
130 MiB/s **  
136MB/s  
SAS Interface maximum instantaneous transfer rate  
1200 MB/s* per port  
(dual port = 2400 MB/s*)  
Logical block sizes  
512E & 512N - 512 (default), 520,524, or 528  
4096N - 4096 (default), 4160, 4192, or 4224  
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  
4.167ms  
*Assumes no errors and no relocated logical blocks. Rate measured from the start of the first logical block transfer to or from the host.  
** MiB/s x 1.048 = MB/s  
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4.3  
Start/stop time  
The drive accepts the commands listed in the SAS Interface Manual less than 3 seconds after DC power has been applied.  
If the drive receives a NOTIFY (ENABLE SPINUP) primitive through either port and has not received a START STOP UNIT command with  
the START bit equal to 0, the drive becomes ready for normal operations within 20 seconds (excluding the error recovery procedure).  
If the drive receives a START STOP UNIT command with the START bit equal to 0 before receiving a NOTIFY (ENABLE SPINUP)  
primitive, the drive waits for a START STOP UNIT command with the START bit equal to 1. After receiving a START STOP UNIT command  
with the START bit equal to 1, the drive waits for a NOTIFY (ENABLE SPINUP) primitive. After receiving a NOTIFY (ENABLE SPINUP)  
primitive through either port, the drive becomes ready for normal operations within 20 seconds (excluding the error recovery procedure).  
The START STOP UNIT command may be used to command the drive to stop the spindle. Stop time is 20 seconds (maximum) from  
removal of DC power. SCSI stop time is 20 seconds. There is no power control switch on the drive. However, power can be cycled on the  
drive by utilizing SAS Power Disable feature defined by T10 (i.e. drive Pin 3 high).  
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  
All default cache and prefetch mode parameter values (Mode Page 08h) for standard OEM versions of this drive family are given in Section  
4.5  
Cache operation  
Note  
Refer to the SAS Interface Manual for more detail concerning the cache bits.  
Of the 128MB physical buffer space in the drive, approximately 60,000KB are available as a data cache. The remaining buffer space is  
reserved for internal drive use.  
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 disk  
access is initiated. If cache operation is not enabled, the buffer is still used, but only as circular buffer segments during disk medium read  
operations (disregarding Prefetch operation for the moment). That is, the drive does not check in the buffer segments for the requested  
read data, but goes directly to the medium to retrieve it. The retrieved data merely passes through some buffer segment on the way to the  
host. All data transfers to the host are in accordance with buffer-full ratio rules. See the explanation provided with the information about  
Mode Page 02h (disconnect/reconnect control) in the 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 disk and transfers them into a segment, and then from there to the host in  
accordance with the Mode Select Disconnect/Reconnect parameters, page 02h.  
2. If the prefetch feature is enabled, refer to section 4.5.2 for operation from this point.  
Each cache segment is actually a self-contained circular buffer whose length is an integer number of logical blocks. The drive dynamically  
creates and removes segments based on the workload. The wrap-around capability of the individual segments greatly enhances the  
cache’s overall performance.  
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.  
Note  
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4.5.1  
Caching write data  
Write caching in this section is the traditional SCSI write caching  
(WCE=1) where writes are not protected on power loss.  
Note  
Refer to the SAS Interface Manual for more detail concerning the cache bits.  
Note  
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. WCE=0 provides NVC-protected write caching over a small portion of the DRAM.  
If read caching is enabled (RCD=0), then data written to the medium is retained in the cache to be made available for future read cache  
hits. The same buffer space and segmentation is used as set up for read functions. The buffer segmentation scheme is set up or changed  
independently, having nothing to do with the state of RCD. When a write command is issued, if RCD=0, the cache is first checked to see if  
any logical blocks that are to be written are already stored in the cache from a previous read or write command. If there are, the respective  
cache segments are cleared. The new data is cached for subsequent Read commands.  
If the number of write data logical blocks exceed the size of the segment being written into, when the end of the segment is reached, the  
data is written into the beginning of the same cache segment, overwriting the data that was written there at the beginning of the operation;  
however, the drive does not overwrite data that has not yet been written to the medium.  
If write caching is enabled (WCE=1), then the drive may return Good status on a write command after the data has been transferred into  
the cache, but before the data has been written to the medium. If an error occurs while writing the data to the medium, and Good status  
has already been returned, a deferred error will be generated.  
The Synchronize Cache command may be used to force the drive to write all cached write data to the medium. Upon completion of a  
Synchronize Cache command, all data received from previous write commands will have been written to the medium. Section 11.3.2  
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 disk immediately beyond that which was requested by a Read  
command are retrieved and stored in the buffer for immediate transfer from the buffer to the host on subsequent Read commands that  
request those logical blocks (this is true even if cache operation is disabled). Though the prefetch operation uses the buffer as a cache,  
finding the requested data in the buffer is a prefetch hit, not a cache operation hit.  
To enable Prefetch, use Mode Select page 08h, byte 12, bit 5 (Disable Read Ahead - DRA bit). DRA bit = 0 enables prefetch.  
The drive does not use the Max Prefetch field (bytes 8 and 9) or the Prefetch Ceiling field (bytes 10 and 11).  
When prefetch (read look-ahead) is enabled (enabled by DRA = 0), the drive enables prefetch of contiguous blocks from the disk when it  
senses that a prefetch hit will likely occur. The drive disables prefetch when it decides that a prefetch hit is not likely to occur.  
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5.0 Reliability specifications  
The following reliability specifications assume correct host and drive operational interface, including all interface timings, power supply  
voltages, environmental requirements and drive mounting constraints.  
Seek error rate:  
Less than 10 errors in 108 seeks  
1
Read Error Rates  
Recovered Data  
Unrecovered Data  
Miscorrected Data  
Less than 10 error in 1012 bits transferred (OEM default settings)  
Less than 1 sector in 1015 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 power requirements."  
Errors caused by host system failures are excluded from error rate computations.  
Assume random data.  
Default OEM error recovery settings are applied. This includes AWRE, ARRE, full read retries, full write retries and full retry time.  
5.1.1  
Recoverable Errors  
Recoverable errors are those detected and corrected by the drive, and do not require user intervention.  
Recoverable Data errors will use 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 operations, but not caused by the read. If an unrecoverable data  
error is detected, a MEDIUM ERROR (03h) in the Sense Key will be reported. Multiple unrecoverable data errors resulting from the same  
cause are treated as 1 error.  
5.1.3  
Seek errors  
A seek error is defined as a failure of the drive to position the heads to the addressed track. After detecting an initial seek error, the drive  
automatically performs an error recovery process. If the error recovery process fails, a seek positioning error (Error code = 15h or 02h) will  
8
be reported with a Hardware error (04h) in the Sense 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.  
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5.2  
Reliability and service  
The reliability of Enterprise Capacity 2.5 HDD v3 disk drives can be enhanced by ensuring that the drive receives adequate cooling.  
5.2.1  
Annualized Failure Rate (AFR) and Mean Time Between Failure (MTBF)  
The production disk drive shall achieve an annualized failure-rate of 0.44% (MTBF of 2,000,000 hours) over a 5 year service life when  
used in Enterprise Storage field conditions as limited by the following:  
8760 power-on hours per year.  
HDA temperature as reported by the drive <= 40C  
Ambient dew point temperature <= 26C  
Typical I/O workload  
The AFR (MTBF) is a population statistic not relevant to individual units.  
ANSI/ISA S71.04-2013 G2 classification levels and dust contamination to ISO 14644-1 Class 8 standards (as measured at the device).  
The MTBF specification for the drive assumes the operating environment is designed to maintain nominal drive temperature and humidity.  
Occasional excursions in operating conditions between the rated MTBF conditions and the maximum drive operating conditions may occur  
without significant impact to the rated MTBF. However continual or sustained operation beyond the rated MTBF conditions will degrade the  
drive MTBF and reduce product reliability.  
15  
Nonrecoverable read errors  
1 per 10 bits read, max  
Annualized Failure Rate (AFR) 0.44% (nominal power, 40°C case temperature)  
Load unload cycles  
300,000 (25°C, 50% rel. humidity) (600,000 design life testing)  
<550TB/year  
Maximum Rated Workload  
Workloads exceeding the annualized rate may degrade the drive MTBF and impact product reliability.  
The Average Annualized Workload Rate is in units of TB per year, or TB per 8760 power on hours.  
Workload Rate = TB transferred * (8760 / recorded power on hours).  
Warranty  
http://www.seagate.com/support/warranty-and-replacements/.  
From this page, click on the “Check to see if the drive is under Warranty” link. The following are  
required to be provided: the drive serial number, model number (or part number) and country of  
purchase.The system will display the warranty information for the drive.  
Preventive maintenance  
None required.  
5.2.2  
Preventive maintenance  
No routine scheduled preventive maintenance is required.  
5.2.3  
Hot plugging the drive  
When a disk 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 is 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.  
It is the responsibility of the systems integrator to assure that no temperature, energy, voltage hazard,  
shorting of PCBA to ground, 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.  
Note  
The drive motor must come to a complete stop prior to changing the  
plane of operation. This time is required to insure data integrity.  
Caution  
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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 an application to back up the data before an  
actual failure occurs.  
The drive’s firmware monitors specific attributes for degradation  
over time but can’t predict instantaneous drive failures.  
Note  
Each monitored attribute has been selected to monitor a specific set of failure conditions in the operating performance of the drive and the  
thresholds are optimized to minimize “false” and “failed” predictions.  
Controlling S.M.A.R.T.  
The operating mode of S.M.A.R.T. is controlled by the DEXCPT and PERF bits on the Informational Exceptions Control mode page (1Ch).  
Use the DEXCPT bit to enable or disable the S.M.A.R.T. feature. Setting the DEXCPT bit disables all S.M.A.R.T. functions. When enabled,  
S.M.A.R.T. collects on-line data as the drive performs normal read and write operations. When the PERF bit is set, the drive is considered  
to be in “On-line Mode Only” and will not perform off-line functions.  
Applications 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.  
Applications can interrogate the drive through the host to determine the time remaining before the next scheduled measurement and data  
logging process occurs. To accomplish this, issue a Log Sense command to log page 0x3E. This allows applications to control when  
S.M.A.R.T. interruptions occur. Forcing S.M.A.R.T. with the RTZ command resets the timer.  
Performance impact  
S.M.A.R.T. attribute data is saved to the disk so that the events that caused a predictive failure can be recreated. The drive measures and  
saves parameters once every hour subject to an idle period on the drive interfaces. The process of measuring off-line attribute data and  
saving data to the disk 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.  
S.M.A.R.T. measures error rates. All errors for each monitored attribute are recorded. A counter keeps track of the number of errors for the  
current interval. This counter is referred to as the Failure Counter.  
Error rate is the number of errors per operation. The algorithm that S.M.A.R.T. uses to record rates of error is to set thresholds for the  
number of errors and their interval. If the number of errors exceeds the threshold before the interval expires, the error rate is considered to  
be unacceptable. If the number of errors does not exceed the threshold before the interval expires, the error rate is considered to be  
acceptable. In either case, the interval and failure counters are reset and the process starts over.  
Predictive failures  
S.M.A.R.T. signals predictive failures when the drive is performing unacceptably for a period of time. The firmware keeps a running count  
of the number of times the error rate for each attribute is unacceptable. To accomplish this, a counter is incremented each time the error  
rate is unacceptable and decremented (not to exceed zero) whenever the error rate is acceptable. If the counter continually increments  
such that it reaches the predictive threshold, a predictive failure is signaled. This counter is referred to as the Failure History Counter.  
There is a separate Failure History Counter for each attribute.  
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5.2.5  
Thermal monitor  
Enterprise Capacity 2.5 HDD v3 drives implement a temperature warning system which:  
1. Signals the host if the temperature exceeds a value which would threaten the drive.  
2. Saves a S.M.A.R.T. data frame on the drive which exceeds the threatening temperature value.  
A temperature sensor monitors the drive temperature and issues a warning over the interface when the temperature exceeds a set  
threshold. The temperature is measured at power-up and then at ten-minute intervals after power-up.  
The thermal monitor system generates a warning code of 01-0B01 when the temperature exceeds the specified limit in compliance with  
the SCSI standard.  
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).  
Table 1  
Temperature Log Page (0Dh)  
Resettable or  
Changeable  
Support  
Required  
Parameter Code  
Description  
0000h  
0001h  
Primary Temperature  
Never  
Mandatory  
Optional  
Reference Temperature  
Never  
[a]. Do not reset the log parameter.  
[b]. Do not make any requested changes in any field in any log parameter in any log page.  
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.  
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5.2.6.2  
Implementation  
This section provides all of the information necessary to implement the DST function on this drive.  
5.2.6.2.1  
State of the drive prior to testing  
The drive must be in a ready state before issuing the Send Diagnostic command. There are multiple reasons why a drive may not be ready,  
some of which are valid conditions, and not errors. For example, a drive may be in process of doing a format, or another DST. It is the  
responsibility of the host application to determine the “not ready” cause.  
While not technically part of DST, a Not Ready condition also qualifies the drive to be returned to Seagate as a failed drive.  
A Drive Not Ready condition is reported by the drive under the following conditions:  
Motor will not spin  
Motor will not lock to speed  
Servo will not lock on track  
Drive cannot read configuration tables from the disk  
In these conditions, the drive responds to a Test Unit Ready command with an 02/04/00 or 02/04/03 code.  
5.2.6.2.2 Invoking DST  
To invoke DST, submit the Send Diagnostic command with the appropriate Function Code (001b for the short test or 010b for the extended  
test) in bytes 1, bits 5, 6, and 7.  
5.2.6.2.3  
Short and extended tests  
DST has two testing options:  
1. short  
2. extended  
These testing options are described in the following two subsections.  
Each test consists of three segments: an electrical test segment, a servo test segment, and a read/verify scan segment.  
Short test (Function Code: 001b)  
The purpose of the short test is to provide a time-limited test that tests as much of the drive as possible within 120 seconds. The short test  
does not scan the entire media surface, but does some fundamental tests and scans portions of the media. A complete read/verify scan is  
not performed and only factual failures will report a fault condition. This option provides a quick confidence test of the drive.  
Extended test (Function Code: 010b)  
The objective of the extended test option is to empirically test critical drive components. For example, the seek tests and on-track  
operations test the positioning mechanism. The read operation tests the read head element and the media surface. The write element is  
tested through read/write/read operations. The integrity of the media is checked through a read/verify scan of the media. Motor  
functionality is tested by default as a part of these tests.  
The anticipated length of the Extended test is reported through the Control Mode page.  
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5.2.6.2.4  
Log page entries  
When the drive begins DST, it creates a new entry in the Self-test Results Log page. The new entry is created by inserting a new self-test  
parameter block at the beginning of the self-test results log parameter section of the log page. Existing data will be moved to make room  
for the new parameter block. The drive reports 20 parameter blocks in the log page. If there are more than 20 parameter blocks, the least  
recent parameter block will be deleted. The new parameter block will be initialized as follows:  
1. The Function Code field is set to the same value as sent in the DST command  
2. The Self-Test Results Value field is set to Fh  
3. The drive will store the log page to non-volatile memory  
After a self-test is complete or has been aborted, the drive updates the Self-Test Results Value field in its Self-Test Results Log page in  
non-volatile memory. The host may use Log Sense to read the results from up to the last 20 self-tests performed by the drive. The self-test  
results value is a 4-bit field that reports the results of the test. If the field is set to zero, the drive passed with no errors detected by the DST.  
If the field is not set to zero, the test failed for the reason reported in the field.  
The drive will report the failure condition and LBA (if applicable) in the Self-test Results Log parameter. The Sense key, ASC, ASCQ, and  
FRU are used to report the failure condition.  
5.2.6.2.5  
Abort  
There are multiple ways to abort a diagnostic. Two examples are: using a SCSI Bus Reset or a Bus Device message to abort the  
diagnostic  
To abort a DST executing in background mode, use the abort code in the DST Function Code field. This will cause a 01 (self-test aborted  
by the application client) code to appear in the self-test results values log. All other abort mechanisms will be reported as a 02 (self-test  
routine was interrupted by a reset condition).  
5.2.7  
Product warranty  
Shipping  
When transporting or shipping a drive, use only a Seagate-approved container. Keep the original box. Seagate approved containers are  
easily identified by the Seagate Approved Package label. Shipping a drive in a non-approved container voids the drive warranty.  
Seagate repair centers may refuse receipt of components improperly packaged or obviously damaged in transit. Contact an 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.  
Storage  
The maximum recommended storage period for the drive in a non-operational environment is 90 days. Drives should be stored in the  
original unopened Seagate shipping packaging when ever possible. Once the drive is removed from the Seagate original packaging the  
recommended maximum period between drive operation cycles is 30 days. During any storage period the drive non-operational  
temperature, humidity, wet bulb, atmospheric conditions, shock, vibration, magnetic and electrical field specifications should be followed.  
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6.0 Physical/electrical specifications  
This section provides information relating to the physical and electrical characteristics of the drive.  
6.1  
PowerChoiceTM power management  
Drives using the load/unload architecture provide programmable power management to tailor systems for performance and greater energy  
efficiency.  
The table below lists the supported PowerChoice modes. The further down in the table, the more power savings can be realized. 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  
Heads unloaded. Disks spinning at reduced RPM  
Heads unloaded. Motor stopped (disks not spinning)  
Idle_C  
Standby_Y  
Standby_Z  
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 condition timers. The timer val-  
ues 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.  
6.1.1  
PowerChoice reporting methods  
PowerChoiceTM provides these reporting methods for tracking purposes:  
Request Sense command reports  
Current power condition  
Method of entry  
Processing the Request Sense command does not impact the drive’s power save state.  
Note  
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  
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6.2  
AC power requirements  
DC power requirements  
None.  
6.3  
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 10mA and  
a commensurate increase of about 50mW in power consumption. There is no additional drain on the 12V supply.  
Operation at 6 Gb mode reduces the +5V supply load by 15mA with a commensurate power reduction of 75mW.  
There is no measurable impact to the 12V supply load when running at lower interface speeds.  
Note  
Table 2 2TB standard drive DC power requirements  
12.0Gb mode  
Notes  
(Amps)  
+5V  
(Amps)  
(Watts)  
Total  
Voltage  
+12V  
[5]  
Regulation  
±5%  
±5%  
[1] [7]  
Avg idle current DC  
Advanced Idle Current  
Idle_A  
0.37  
0.14  
3.53  
0.37  
0.30  
0.30  
0.28  
0.14  
0.09  
0.06  
0.01  
3.53  
2.58  
2.22  
1.52  
Idle_B  
Idle_C  
Standby  
Maximum starting current  
(peak DC) DC  
0.60  
0.74  
0.31  
0.76  
0.97  
0.03  
(peak AC) AC  
[1] [4]  
Delayed motor start (max) DC  
Operating current (random read):  
Typical DC  
1.91  
[1]  
0.46  
0.52  
1.38  
0.32  
0.34  
0.91  
6.14  
6.68  
Maximum DC  
Maximum (peak) DC  
Operating current (random write)  
Typical DC  
[1]  
[1]  
0.45  
0.50  
0.78  
0.29  
0.33  
0.89  
5.73  
6.46  
Maximum DC  
Maximum (peak) DC  
Operating current (sequential read)  
Typical DC  
[1]  
[1]  
0.65  
0.71  
0.98  
0.18  
0.19  
0.31  
5.41  
5.83  
Maximum DC  
Maximum (peak) DC  
Operating current (sequential write)  
Typical DC  
[1]  
[1]  
0.60  
0.65  
0.87  
0.20  
0.22  
0.35  
5.40  
5.89  
Maximum DC  
Maximum (peak) DC  
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Table 3 1TB standard drive DC power requirements  
12.0Gb mode  
(Amps)  
Notes  
(Amps)  
+5V  
(Watts)  
Total  
Voltage  
+12V  
[5]  
Regulation  
±5%  
±5%  
[1] [7]  
Avg idle current DC  
0.37  
0.12  
3.29  
Advanced Idle Current  
Idle_A  
0.37  
0.30  
0.30  
0.28  
0.12  
0.09  
0.06  
0.01  
3.29  
2.58  
2.22  
1.52  
Idle_B  
Idle_C  
Standby  
Maximum starting current  
(peak DC) DC  
0.60  
0.74  
0.31  
0.69  
0.96  
0.03  
(peak AC) AC  
[1] [4]  
Delayed motor start (max) DC  
1.91  
Operating current (random read):  
Typical DC  
0.46  
0.52  
1.38  
0.30  
0.32  
0.86  
5.90  
6.44  
[1]  
Maximum DC  
Maximum (peak) DC  
Operating current (random write)  
[1]  
Typical DC  
0.45  
0.50  
0.78  
0.27  
0.34  
0.87  
5.49  
6.58  
[1]  
Maximum DC  
Maximum (peak) DC  
Operating current (sequential read)  
[1]  
Typical DC  
0.65  
0.71  
0.98  
0.15  
0.17  
0.29  
5.05  
5.59  
[1]  
Maximum DC  
Maximum (peak) DC  
Operating current (sequential write)  
[1]  
Typical DC  
0.60  
0.65  
0.87  
0.17  
0.19  
0.34  
5.04  
5.53  
[1]  
Maximum DC  
Maximum (peak) DC  
[1] Measured with average reading DC ammeter. Instantaneous +12V current peaks will exceed these values. Power supply at nominal  
voltage. N (number of drives tested) = 6, 35 Degrees C ambient.  
[2] For +12 V, a -7.5%/+10% tolerance is allowed during initial spindle start but must return to ±5% before reaching 7,134 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 selec-  
tion by the host initiator.  
[3] See +12V current profile in Figure 1 (for 2TB models).  
[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, 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.  
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.  
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6.3.1  
Conducted noise immunity  
Noise is specified as a periodic and random distribution of frequencies covering a defined frequency range. 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  
450 mV pp from 100 Hz to 100 KHz.  
250 mV pp from 100 KHz to 20 MHz.  
150 mV pp from 20 MHz to 80 MHz.  
6.3.2  
Power sequencing  
The drive does not require power sequencing. The drive protects against inadvertent writing during power-up and down.  
6.3.3  
Current profiles  
The +12V and +5V current profiles for the Enterprise Capacity 2.5 HDD drives are shown below.  
Figure 1.  
Current profiles for 2TB models  
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Figure 2.  
Current profiles for 1TB models  
Note: All times and currents are typical. See Section 6.3 for maximum current requirements.  
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6.4  
Power dissipation  
2TB models in 12Gb operation  
Typical power dissipation under idle conditions in 12Gb operation is 5.478 watts 18.69 BTUs per hour).  
drive in the 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 3.  
2TB (at 12Gb) DC current and power vs. input/output operations per second  
1TB models in 12Gb operation  
Typical power dissipation under idle conditions in 12Gb operation is 5.240 watts 17.88 BTUs per hour).  
drive in the system on the horizontal axis and read the corresponding +5 volt current, +12 volt current, and total watts on the vertical axis. To  
calculate BTUs per hour, multiply watts by 3.4123.  
Figure 4.  
1TB (at 12Gb) DC current and power vs. input/output operations per second  
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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).  
To maintain optimal performance drives should be run at nominal drive temperature and humidity.  
Note  
6.5.1  
Temperature  
a. Operating  
41°F to 131°F (5°C to 55°C) drive temperature range with a maximum temperature gradient of 36°F (20°C) per hour.  
The maximum allowable drive temperature is 140°F (60°C).  
Operating drive temperature references temperature reported by the drive on Log Page 0Dh  
Note  
Air flow may be required to achieve consistent nominal drive temperature values (see Section 9.2). To confirm that the required cooling  
is provided for the electronics and HDA, place the drive in its final mechanical configuration, and perform random write/read operations.  
After the temperatures stabilize, read drive temperature from Temperature Log Page (0Dh).  
b. Non-operating  
–40° to 158°F (–40° to 70°C) package ambient with a maximum gradient of 36°F (20°C) per hour. This specification assumes that the  
drive is packaged in the shipping container designed by Seagate for use with drive.  
6.5.2  
Humidity  
The values below assume that no condensation on the drive occurs. Maximum wet bulb temperature is 84.2°F (29°C).  
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 with a maximum gradient of 20% per hour.  
6.5.3  
a. Operating  
–1000 to +10,000 feet (–304.8 to +3048 meters)  
Effective altitude (sea level)  
b. Non-operating  
–1000 to +40,000 feet (–304.8 to +12,192 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  
6.5.4.1  
a. Operating  
The drive, as installed for normal operation, shall operate error free while subjected to intermittent shock not exceeding:  
Shock  
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 deg-  
radation.  
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.  
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c. Packaged  
Seagate finished drive bulk packs are designed and tested to meet or exceed applicable ISTA and ASTM standards. Volume finished  
drives will be shipped from Seagate factories on pallets to minimize freight costs and ease material handling. Seagate finished drive  
bulk packs may be shipped individually. For less than full shipments, instructions are printed on the bulk pack carton for minimum drive  
quantities and proper drive placement.  
Figure 5.  
Recommended mounting  
.
Image is for reference only, may not represent actual drive.  
Note  
6.5.4.2  
Vibration  
a. Operating  
The drive as installed for normal operation, shall comply with the complete specified performance while subjected to continuous vibra-  
tion not exceeding  
5 - 500 Hz @ 0.5 G (zero to peak)  
Vibration may be applied in the X, Y, or Z axis.  
10 - 500 Hz  
(translational random flat profile)  
0.5 GRMS  
b. Non-operating  
The limits of non-operating vibration shall apply to all conditions of handling and transportation. This includes both isolated drives and  
integrated drives.  
The drive shall not incur physical damage or degraded performance as a result of continuous vibration not exceeding  
5 - 500 Hz @ 3.0 G (zero to peak)  
Vibration may be applied in the X, Y, or Z axis.  
10 - 500 Hz  
(translational random flat profile)  
2.4 GRMS  
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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 corrosive chemicals as electronic  
drive component reliability can be affected by the installation environment. The silver, copper, nickel and gold films used in Seagate  
products are especially sensitive to the presence of sulfide, chloride, and nitrate contaminants. Sulfur is found to be the most damaging.  
Materials used in cabinet fabrication, such as vulcanized rubber, that can outgas corrosive compounds should be minimized or eliminated.  
The useful life of any electronic equipment may be extended by replacing materials near circuitry with sulfide-free alternatives.  
Seagate recommends that data centers be kept clean by monitoring and controlling the dust and gaseous contamination. Gaseous  
contamination should be within ANSI/ISA S71.04-2013 G2 classification levels (as measured on copper and silver coupons), and dust  
contamination to ISO 14644-1 Class 8 standards, and MTBF rated conditions as defined in the Annualized Failure Rate (AFR) and Mean  
Time Between Failure (MTBF) section.  
6.5.7  
Acoustics  
Sound power during idle mode shall be 2.8 bels typical when measured to ISO 7779 specification.  
Sound power during operating mode shall be 3.2 bels typical when measured to ISO 7779 specification.  
There will not be any discrete tones more than 9 dB above the masking noise on typical drives when measured according to Seagate  
specification 30553-001. There will not be any tones more than 24 dB above the masking noise on any drive.  
6.5.8  
Electromagnetic susceptibility  
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6.6  
Mechanical specifications  
Weight:  
2TB models  
1TB models  
198 g  
190 g  
0.437 lb  
0.419 lb  
.
Note  
Figure 6.  
Mounting configuration dimensions  
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7.0 About FIPS  
The Federal Information Processing Standard (FIPS) Publication 140-2 is a U.S. Government Computer Security Standard used to  
accredit cryptographic modules. It is titled 'Security Requirements for Cryptographic Modules (FIPS PUB 140-2)' and is issued by the  
National Institute of Standards and Technology (NIST).  
Purpose  
This standard specifies the security requirements that will be satisfied by a cryptographic module utilized within a security system  
protecting sensitive but unclassified information. The standard provides four increasing, qualitative levels of security: Level 1, Level 2,  
Level 3 and Level 4. These levels are intended to cover the wide range of potential applications and environments in which cryptographic  
modules may be employed.  
Validation Program  
Products that claim conformance to this standard are validated by the Cryptographic Module Validation Program (CMVP) which is a joint  
effort between National Institute of Standards and Technology (NIST) and the Communications Security Establishment (CSE) of the  
Government of Canada. Products validated as conforming to FIPS 140-2 are accepted by the Federal agencies of both countries for the  
protection of sensitive information (United States) or Designated Information (Canada).  
In the CMVP, vendors of cryptographic modules use independent, accredited testing laboratories to have their modules tested. National  
Voluntary Laboratory Accreditation Program (NVLAP) accredited laboratories perform cryptographic module compliance/conformance  
testing.  
Seagate Enterprise SED  
to satisfy FIPS 140-2 Level 2 requirements. In order to operate in FIPS Approved Mode of Operation, these SEDs require security  
initialization. For more information, refer to 'Security Rules' section in the 'Security Policy' document uploaded on the NIST website. To  
Security Level 2  
Security Level 2 enhances the physical security mechanisms of a Security Level 1 cryptographic module by adding the requirement for  
tamper-evidence, which includes the use of tamper-evident coatings or seals on removable covers of the module. Tamper-evident coat-  
ings or seals are placed on a cryptographic module so that the coating or seal must be broken to attain physical access to the critical  
security parameters (CSP) within the module. Tamper-evident seals (example shown in Figure 7, page 32) are placed on covers to pro-  
tect against unauthorized physical access. In addition Security Level 2 requires, at a minimum, role-based authentication in which a  
cryptographic module authenticates the authorization of an operator to assume a specific role and perform a corresponding set of ser-  
vices.  
Figure 7. Example of FIPS tamper evidence labels.  
.
Image is for reference only, may not represent actual drive.  
Note  
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8.0 About self-encrypting drives  
Self-encrypting drives (SEDs) offer encryption and security services for the protection of stored data, commonly known as “protection of  
data at rest.” These drives are compliant with the Trusted Computing Group (TCG) Enterprise Storage Specifications as detailed in Section  
The Trusted Computing Group (TCG) is an organization sponsored and operated by companies in the computer, storage and digital  
communications industry. Seagate’s SED models comply with the standards published by the TCG.  
To use the security features in the drive, the host must be capable of constructing and issuing the following two SCSI commands:  
Security Protocol Out  
Security Protocol In  
These commands are used to convey the TCG protocol to and from the drive in their command payloads.  
8.1  
Data encryption  
Encrypting drives use one inline encryption engine for each port, employing AES 256-bit data encryption keys with AES-XTS 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 and cannot be disabled.  
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  
8.2  
Controlled access  
The drive has two security providers (SPs) called the "Admin SP" and the "Locking SP." These act as gatekeepers to the drive security  
services. Security-related commands will not be accepted unless they also supply the correct credentials to prove the requester is  
authorized to perform the command.  
8.2.1  
Admin SP  
available using the SID (Secure ID) password or the MSID (Manufacturers Secure ID) password.  
8.2.2  
Locking SP  
The Locking SP controls read/write access to the media and the cryptographic erase feature. Access to the Locking SP is available using  
the BandMasterX or EraseMaster passwords. Since the drive owner can define up to 16 data bands on the drive, each data band has its  
own password called BandMasterX where X is the number of the data band (0 through 15).  
8.2.3  
Default password  
When the drive is shipped from the factory, all passwords are set to the value of MSID. This 32-byte random value can only be read by the  
host electronically over the interface. After receipt of the drive, it is the responsibility of the owner to use the default MSID password as the  
authority to change all other passwords to unique owner-specified values.  
8.3  
Random number generator (RNG)  
The drive has a 32-byte hardware RNG that it is uses to derive encryption keys or, if requested to do so, to provide random numbers to the  
host for system use, including using these numbers as Authentication Keys (passwords) for the drive’s Admin and Locking SPs.  
8.4  
Drive locking  
bands.  
The variable "LockOnReset" should be set to "PowerCycle" to ensure that the data bands will be locked if power is lost. In addition  
"ReadLockEnabled" and "WriteLockEnabled" must be set to true in the locking table in order for the bands "LockOnReset" setting of  
"PowerCycle" to actually lock access to the band when a "PowerCycle" event occurs. 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 unlocked.  
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8.5  
Data bands  
When shipped from the factory, the drive is configured with a single data band called Band 0 (also known as the Global Data Band) which  
comprises LBA 0 through LBA max. The host may allocate Band1 by specifying a start LBA and an LBA range. The real estate for this  
band is taken from the Global Band. An additional 14 Data Bands may be defined in a similar way (Band2 through Band15) but before  
these bands can be allocated LBA space, they must first be individually enabled using the EraseMaster password.  
Data bands cannot overlap but they can be sequential with one band ending at LBA (x) and the next beginning at LBA (x+1).  
Each data band has its own drive-generated encryption key and its own user-supplied password. The host may change the Encryption Key  
(see Section 8.6) or the password when required. The bands should be aligned to 4096N LBA boundaries.  
8.6  
Cryptographic erase  
A significant feature of SEDs is the ability to perform a cryptographic erase. This involves the host telling the drive to change the data  
encryption key for a particular band. Once changed, the data is no longer recoverable since it was written with one key and will be read  
using a different key. Since the drive overwrites the old key with the new one, and keeps no history of key changes, the user data can  
never be recovered. This is tantamount to an instantaneous data erase and is very useful if the drive is to be scrapped or redispositioned.  
8.7  
Authenticated firmware download  
In addition to providing a locking mechanism to prevent unwanted firmware download attempts, the drive also only accepts download files  
which have been cryptographically signed by the appropriate Seagate Design Center.  
Three conditions must be met before the drive will allow the download operation:  
1. The download must be an SED file. A standard (base) drive (non-SED) file will be rejected.  
2. The download file must be signed and authenticated.  
3. As with a non-SED drive, the download file must pass the acceptance criteria for the drive. For example it must be applicable to the  
correct drive model, and have compatible revision and customer status.  
8.8  
Power requirements  
The standard drive models and the SED drive models have identical hardware, however the security and encryption portion of the drive  
controller ASIC is enabled and functional in the SED models. This represents a small additional drain on the 5V supply of about 30mA and  
a commensurate increase of about 150mW in power consumption. There is no additional drain on the 12V supply. See the tables in  
8.9  
Supported commands  
The SED models support the following two commands in addition to the commands supported by the standard (non-SED) models as listed  
Security Protocol Out (B5h)  
Security Protocol In (A2h)  
8.10 Sanitize - CRYPTOGRAPHIC ERASE  
This command cryptographically erases all user data on the drive by destroying the current data encryption key and replacing it with a new  
data encryption key randomly generated by the drive. Sanitize CRYPTOGRAPHIC ERASE is a SCSI CDB Op code 48h and selecting the  
service action code 3 (CRYPTOGRAPHIC ERASE)  
8.11 RevertSP  
The SED models will support the RevertSP feature which erases all data in all bands on the device and returns the contents of all SPs  
(Security Providers) on the device to their original factory state. In order to execute the RevertSP method the unique PSID (Physical  
Secure ID) printed on the drive label must be provided. PSID is not electronically accessible and can only be manually read from the drive  
label or scanned in via the 2D barcode.  
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9.0 Defect and error management  
Seagate continues to use innovative technologies to manage defects and errors. These technologies are designed to increase data  
integrity, perform drive self-maintenance, and validate proper drive operation.  
SCSI defect and error management involves drive internal defect/error management and 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 9.4)  
Deferred Auto-Reallocation (see Section 9.5)  
Idle Read After Write (see Section 9.6)  
The read error rates and specified storage capacities are not dependent on host (initiator) defect management routines.  
9.1  
Drive internal defects/errors  
During the initial drive format operation at the factory, media defects are identified, tagged as being unusable, and their locations recorded  
on the drive primary defects list (referred to as the “P’ list and also as the ETF defect list). At factory format time, these known defects are  
also reallocated, that is, reassigned to a new place on the medium and the location listed in the defects reallocation table. The “P” list is not  
altered after factory formatting. Locations of defects found and reallocated during error recovery procedures after drive shipment are listed  
in the “G” list (defects growth list). The “P” and “G” lists may be referenced by the initiator using the Read Defect Data command.  
Details of the SCSI commands supported by the drive are described in the SAS Interface Manual. Also, more information on the drive Error  
Recovery philosophy is presented in the SAS Interface Manual.  
9.2  
Drive error recovery procedures  
When an error occurs during drive operation, the drive, if programmed to do so, performs error recovery procedures to attempt to recover  
the data. The error recovery procedures used depend on the options previously set in the Error Recovery Parameters mode page. Error  
recovery and defect management may involve using several SCSI commands described in the SCSI Interface Product Manual, 75789509.  
The drive implements selectable error recovery time limits required in video applications.  
The error recovery scheme supported by the drive provides a way to control the total error recovery time for the entire command in addition  
to controlling the recovery level for a single LBA. The total amount of time spent in error recovery for a command can be limited using the  
Recovery Time Limit bytes in the Error Recovery mode page. The total amount of time spent in error recovery for a single LBA can be  
limited using the Read Retry Count or Write Retry Count bytes in the Error Recovery mode page.  
The drive firmware error recovery algorithms consist of 20 levels for read recoveries and six 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 (Auto Read Reallocation)  
bit or AWRE (Auto Write Reallocation) bit is one, the RC (Read Continuous) bit is zero, and the recovery time limit for the command has  
not yet been met. Time needed to perform reallocation is not counted against the recovery time limit.  
When the RC bit is one, reallocations are disabled even if the ARRE or AWRE bits are one. The drive will still perform data recovery  
actions within the limits defined by the Read Retry Count, Write Retry Count, and Recovery Time Limit parameters. However, the drive  
does not report any unrecovered errors.  
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Table 4 Read and write retry count maximum recovery times  
Maximum recovery time per LBA  
(cumulative, ms)  
Maximum recovery time per LBA  
(cumulative, ms)  
Read retry count*  
Write retry count  
0
25  
1
130  
1
50  
5
570  
2
78  
10  
1140  
1720  
2520  
3
95  
15  
4
186  
295  
20 (default)  
5 (default)  
* For read retry count, every tick ~ 5% of total error recovery. Valid range setting is 1-20.  
e.g. 1 ~ 5%  
5 ~ 25%  
20 ~ 100%  
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 and if the read retry count is set to 5, this means ~ 25% of error recovery will be  
executed which consumes 621.62 ms (please refer to the table above). If the limit is reached and a LBA has not yet been recovered (i.e.  
requires retries beyond 621.62 ms), the command will end with Check Condition status report and unrecoverable read error will be  
reported.  
9.3  
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 commands are discussed.  
9.4  
Background Media Scan  
Background Media Scan (BMS) is a self-initiated media scan. BMS is defined in the T10 document SPC-4 available from the T10  
committee. BMS performs sequential reads across the entire pack of the media while the drive is idle. In RAID arrays, BMS allows hot  
spare drives to be scanned for defects prior to being put into service by the host system. On regular duty drives, if the host system makes  
use of the BMS Log Page, it can avoid placing data in suspect locations on the media. Unreadable and recovered error sites will be logged  
or reallocated per ARRE/AWRE settings.  
With BMS, the host system can consume less power and system overhead by only checking BMS status and results rather than tying up  
the bus and consuming power in the process of host-initiated media scanning activity.  
Since the background scan functions are only done during idle periods, BMS causes a negligible impact to system performance. The first  
BMS scan for a newly manufactured drive is performed as quickly as possible to verify the media and protect data by setting the “Start time  
after idle” to 5ms, all subsequent scans begin after 500ms of idle time. Other features that normally use idle time to function will function  
normally because BMS functions for limited time bursts then suspends activity 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.  
9.5  
Deferred Auto-Reallocation  
Deferred Auto-Reallocation (DAR) simplifies reallocation algorithms at the system level by allowing the drive to reallocate unreadable  
locations on a subsequent write command. Sites are marked for DAR during read operations performed by the drive. When a write  
command is received for an LBA marked for DAR, the auto-reallocation process is invoked and attempts to rewrite the data to the original  
location. If a verification of this rewrite fails, the sector is re-mapped to a spare location.  
This is in contrast to the system having to use the Reassign Command to reassign a location that was unreadable and then generate a  
write command to rewrite the data. DAR is most effective when AWRE and ARRE are enabled—this is the default setting from the Seagate  
factory. With AWRE and ARRE disabled DAR is unable to reallocate the failing location and will report an error sense code indicating that  
a write command is being attempted to a previously failing location.  
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9.6  
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.  
9.7  
Protection Information (PI)  
Protection Information is intended as a standardized approach to system level LRC traditionally provided by systems using 520 byte  
formatted LBAs. Drives formatted with PI information provide the same, common LBA count (i.e. same capacity point) as non-PI formatted  
drives. Sequential performance of a PI drive will be reduced by approximately 1.56% due to the extra overhead of PI being transferred  
from the media that is not calculated as part of the data transferred to the host. To determine the full transfer rate of a PI drive, transfers  
should be calculated by adding the 8 extra bytes of PI to the transferred LBA length, i.e. 512 + 8 = 520. PI formatted drives are physically  
formatted to 520 byte sectors that store 512 bytes of customer data with 8 bytes of Protection Information appended to it. The advantage  
of PI is that the Protection Information bits can be managed at the HBA and HBA driver level. Allowing a system that typically does not  
support 520 LBA formats to integrate this level of protection.  
Protection Information is valid with any supported LBA size. 512 LBA size is used here as common example.  
9.7.1  
Levels of PI  
There are 4 types of Protection Information.  
Type 0 - Describes a drive that is not formatted with PI information bytes. This allows for legacy support in non-PI systems.  
Type 1 - Provides support of PI protection using 10 and 16 byte commands. The RDPROTECT and WRTPROTECT bits allow for checking  
control through the CDB. Eight bytes of Protection Information are transmitted at LBA boundaries across the interface if RDPROTECT and  
WRTPROTECT bits are nonzero values. Type 1 does not allow the use of 32 byte commands.  
Type 2 - Provides checking control and additional expected fields within the 32 byte CDBs. Eight bytes of Protection Information are  
transmitted at LBA boundaries across the interface if RDPROTECT and WRTPROTECT bits are nonzero values. Type 2 does allow the  
use of 10 and 16 byte commands with zero values in the RDPROTECT and WRTPROTECT fields. The drive will generate 8 bytes  
(e.g.0xFFFF) 8 bytes of Protection Information to be stored on the media, but the 8 bytes will not be transferred to the host during a read  
command.  
Type 3 - Seagate products do not support Type 3.  
9.7.2  
Setting and determining the current Type Level  
A drive is initialized to a type of PI by using the format command on a PI capable drive. Once a drive is formatted to a PI Type, it may be  
queried by a Read Capacity (16) command to report the PI type which it is currently formatted to. PI Types cannot coexist on a single drive.  
A drive can only be formatted to a single PI Type. It can be changed at anytime to a new Type but requires a low level format which  
destroys all existing data on the drive. No other vehicle for changing the PI type is provided by the T10 SBC3 specification.  
Type 1 PI format CDB command: 04 90 00 00 00 00, Write Buffer: 00 A0 00 00  
Type 2 PI format CDB command: 04 D0 00 00 00 00, Write Buffer: 00 A0 00 00  
9.7.3  
Identifying a Protection Information drive  
The Standard Inquiry provides a bit to indicate if PI is support by the drive. Vital Product Descriptor (VPD) page 0x86 provides bits to  
indicate the PI Types supported and which PI fields the drive supports checking.  
.
For further details with respect to PI, please refer to SCSI  
Note  
Block Commands - 3 (SBC-3) Draft Standard documentation.  
9.8  
Seagate RAID Rebuild ™  
Seagate RAID Rebuild is an industry standard feature to enable faster recovery from a failed drive in a RAID configuration. It improves  
RAID rebuild performance by extracting easily readable data from a failing drive. It quickly identifies blocks that would take longer to  
recover from the failed drive than to rebuild from the remaining drives in the RAID group.  
This feature allows host control of error recovery, maximizes up time, and minimizes likelihood of 2nd drive failure in a RAID configuration.  
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10.0 Installation  
Enterprise Capacity 2.5 HDD v3 disk 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 accommodate the  
drive. In such systems, the host system typically provides a carrier or tray onto which the drive needs to be mounted. 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. Mount the drive in any orientation.  
.
SAS drives are designed to be attached to the host system without I/O  
or power cables. If the intent is to use the drive in a non-backplane host  
Note  
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 the host system using the instructions provided by the host system. This connects the  
drive directly to the system’s SAS connector. The SAS connector is normally located on a SAS backpanel. See Section 11.4.1 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 for 512E and 512N drives and 4096-byte logical blocks  
for 4096N drives. Reformat the drive only if a different logical block size needs to be selected.  
Figure 8.  
Physical interface  
.
Image is for reference only, may not represent actual drive.  
Note  
10.1 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 preferred mounting orientations.  
10.2 Cooling  
Cabinet cooling must be designed by the customer so that the ambient temperature immediately surrounding the drive does not result in  
The rack, cabinet, or drawer environment for the drive must provide heat removal from the electronics and head and disk assembly (HDA).  
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.  
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If forced air is determined to be necessary, possible air-flow patterns are shown in Figure 9. The air-flow patterns 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  
Figure 9.  
Air flow  
.
Image is for reference only, may not represent actual drive.  
Note  
10.3 Drive mounting  
Mount the drive using the bottom or side mounting holes. If mounting the drive using the bottom holes, ensure to 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.  
10.4 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 electrically isolating shock mounts. If it is desired for the system  
chassis to not be connected to the HDA/PCBA ground, the systems integrator or user must provide a nonconductive (electrically isolating)  
method of mounting the drive in the host equipment.  
Increased radiated emissions may result if maximum surface area ground connection is not provided between system ground and drive  
ground. This is the system designer’s and integrator’s responsibility.  
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11.0 Interface requirements  
This section partially describes the interface requirements as implemented on Enterprise Capacity 2.5 HDD v3 drives. Additional  
information is provided in the SAS Interface Manual (part number 100293071).  
11.1 SAS features  
This section lists the SAS-specific features supported by Enterprise Capacity 2.5 HDD v3 drives.  
11.1.1  
Task management functions  
The table below lists the SAS task management functions supported.  
Table 5 SAS task management functions supported  
Task name  
Supported  
Abort Task  
Yes  
Yes  
Yes  
Yes  
Yes  
Yes  
Clear ACA  
Clear task set  
Abort task set  
Logical Unit Reset  
Query Task  
11.1.2  
Task management responses  
The table below lists the SAS response codes returned for task management functions supported.  
Table 6 Task management response codes  
Function name  
Response code  
Function complete  
Invalid frame  
00  
02  
04  
05  
08  
09  
Function not supported  
Function failed  
Function succeeded  
Invalid logical unit  
11.2 Dual port support  
Enterprise Capacity 2.5 HDD v3 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 12Gb/s or the first port can run at 12Gb/s while  
the second port runs at 3Gb/s.) The supported link rates are 3.0, 6.0 or 12.0 Gb/s.  
Subject to buffer availability, the Enterprise Capacity 2.5 HDD v3 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.  
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11.3 SCSI commands supported  
The table below lists the SCSI commands supported by Enterprise Capacity 2.5 HDD v3 drives.  
Table 7  
Supported commands  
Command name  
Command code  
Supported  
Change Definition  
Compare  
40h  
39h  
18h  
3Ah  
04h  
N
N
N
N
Y
Y
N
Y
Y
Y
N
Y
N
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
N
Y
Y
N
Y
Y
N
N
N
Y
Y
N
Copy  
Copy and Verify  
Format Unit  
DCRT bit supported  
DPRY bit supported  
DSP bit supported  
IMMED bit supported  
IP bit supported  
SI (Security Initialize) bit supported  
STPF bit supported  
VS (vendor specific)  
Inquiry  
12h  
Block Device Characteristics (B1h)  
Block Limits (B0h)  
Date Code page (C1h)  
Device Behavior page (C3h)  
Device Identification (83h)  
Extended Inquiry Data (86h)  
Firmware Numbers page (C0h)  
Implemented Operating Def page (81h)  
Jumper Settings page (C2h)  
Logical Block Provisioning (B2h)  
Mode Page Policy (87h)  
Power Condition (8Ah)  
Protocol Specific Logical Unit Information (90h)  
Protocol Specific Port Information (91h)  
SCSI Ports (88h)  
Supported Vital Product Data page (00h)  
Unit Serial Number page (80h)  
Lock-unlock cache  
36h  
4Ch  
Log Select  
PCR bit  
DU bit  
DS bit  
TSD bit  
ETC bit  
TMC bit  
LP bit  
Log Sense  
4Dh  
Application Client Log page (0Fh)  
Buffer Over-run/Under-run page (01h)  
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Table 7  
Supported commands  
Command name  
[4]  
Command code  
Supported  
Cache Statistics page (37h)  
Y
Y
N
N
N
Y
Y
Y
Y
N
Y
Y
Y
Y
Y
Factory Log page (3Eh)  
Information Exceptions Log page (2Fh)  
Last n Deferred Errors or Asynchronous Events page (0Bh)  
Last n Error Events page (07h)  
Non-medium Error page (06h)  
Pages Supported list (00h)  
Protocol-specific Log Page for SAS (18h)  
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)  
Verify Error Counter page (05h)  
Write error counter page (02h)  
[2]  
Mode Select (same pages as Mode Sense 1Ah)  
15h  
55h  
1Ah  
Y
Mode Select (10) (same pages as Mode Sense 1Ah)  
Y
[2]  
Mode Sense  
Y
Caching Parameters page (08h)  
Control Mode page (0Ah)  
Y
Y
Disconnect/Reconnect (02h)  
Error Recovery page (01h)  
Y
Y
Format page (03h)  
Y
Information Exceptions Control page (1Ch/01h)  
Background Scan mode subpage (01h)  
Notch and Partition Page (0Ch)  
Protocol-Specific Port page (19h)  
Power Condition page (1Ah)  
Rigid Disk 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
5Ah  
5Eh  
5Fh  
34h  
90h  
08h  
28h  
Mode Sense (10) (same pages as Mode Sense 1Ah)  
Persistent Reserve In  
Persistent Reserve Out  
Prefetch (10)  
Y
Y
N
N.A.  
Y
Prefetch (16)  
Read (6)  
Read (10)  
Y
DPO bit supported  
FUA bit supported  
Read (12)  
Y
Y
A8h  
N
Y
Read (16)  
88h  
Read (32)  
7Fh/0009h  
3Ch  
N
Read Buffer (modes 0, 2, 3, Ah and Bh supported)  
Y (non-SED drives only)  
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Table 7  
Supported commands  
Command name  
[4]  
Command code  
Supported  
Read Capacity (10)  
Read Capacity (16)  
Read Defect Data (10)  
Read Defect Data (12)  
Read Long  
25h  
Y
Y
Y
Y
9Eh/10h  
37h  
B7h  
3Eh  
Y (non-SED drives only)  
Read Long (16)  
9Eh/11h  
07h  
Y
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  
48h  
48h  
31h  
30h  
32h  
A2h  
B5h  
0Bh  
2Bh  
1Dh  
Y
Sanitize (CRYPTOGRAPHIC ERASE)  
Sanitize (Overwrite)  
Search Data Equal  
Search Data High  
Search Data Low  
Security Protocol In  
Security Protocol Out  
Seek (6)  
Y (SED drives only)  
Y (SED drives only)  
N
N
N
Y (SED drives only)  
Y (SED drives only)  
Y
Y
Y
Y
Y
N
Y
Y
Y
Y
Y
Y
N
Y
Seek (10)  
Send Diagnostics  
Supported Diagnostics pages (00h)  
Translate page (40h)  
Set Limits  
33h  
1Bh  
35h  
91h  
00h  
2Fh  
Start Unit/Stop Unit (spindle ceases rotating)  
Synchronize Cache  
Synchronize Cache (16)  
Test Unit Ready  
Verify (10)  
BYTCHK bit  
Verify (12)  
AFh  
8Fh  
Verify (16)  
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Table 7  
Supported commands  
Command name  
[4]  
Command code  
Supported  
N (Supported if formatted for  
type 2 protection information)  
Verify (32)  
7Fh/000Ah  
Write (6)  
Write (10)  
DPO bit  
0Ah  
2Ah  
Y
Y
Y
Y
N
Y
FUA bit  
Write (12)  
Write (16)  
AAh  
8Ah  
N (Supported if formatted for  
type 2 protection information)  
Write (32)  
7Fh/000Bh  
2Eh  
Write and Verify (10)  
DPO bit  
Y
Y
N
Y
Write and Verify (12)  
Write and Verify (16)  
AEh  
8Eh  
N (Supported if formatted for  
type 2 protection information)  
Write and Verify (32)  
7Fh/000Ch  
Write Buffer (modes 0, 2, supported)  
Write Buffer  
3Bh  
3Bh  
Y (non-SED drives only)  
Y (non-SED drives only)  
Firmware Download option (modes 5, 7, Ah and Bh)  
Firmware Download option (modes 4, 5, 7)  
Write Long (10)  
Y (SED drives only)  
3Fh  
Y
Y
Y
N
N
Y
N
N
N
N
Write Long (16)  
9Fh/11h  
41h  
Write Same (10)  
PBdata  
LBdata  
93h  
Write Same (16)  
Write Same (32)  
XDRead  
7Fh/000Dh  
52h  
XDWrite  
50h  
XPWrite  
51h  
[1] Enterprise Capacity 2.5 HDD v3 drives can format to 512, 520, 524, 528 (512 emulation and native) or 4096, 4160, 4192, or 4224  
(4096 native).  
[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.  
[5] Approximately 1.5 increase in time to complete this command for a SED drive versus a non-SED drive of the same capacity.  
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11.3.1 Inquiry data  
The table below lists the Inquiry command data that the drive should return to the initiator per the format given in the SAS Interface Manual.  
Table 8  
Enterprise Capacity 2.5 HDD v3 inquiry data  
Bytes  
Data (hex)  
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  
4E  
S#  
00  
00  
00  
69  
61  
20  
02  
58  
S#  
00  
00  
00  
67  
67  
72  
53  
30  
S#  
00  
00  
00  
68  
61  
65  
45  
32  
S#  
00  
00  
00  
74  
74  
73  
41  
36  
S#  
00  
00  
00  
20  
65  
65  
47  
33]  
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  
32  
R#  
00  
00  
00  
6F  
30  
R#  
00  
00  
00  
70  
20  
68  
32* *Copyright  
30* 31* 34*  
72 69 67  
20  
20  
notice  
*
**  
Copyright year (changes with actual year).  
SCSI Revision support. See the appropriate SPC release documentation 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 ST2000NX0263.  
Refer to the values below for the values of bytes 16 through 26 of a particular model:  
ST2000NX0273  
ST2000NX0323  
ST2000NX0333  
ST2000NX0343  
ST2000NX0353  
ST2000NX0433  
ST1000NX0323  
ST1000NX0333  
ST1000NX0363  
ST1000NX0373  
ST1000NX0453  
53 54 32 30 30 30 4E 58 30 32 37 33  
53 54 32 30 30 30 4E 58 30 33 32 33  
53 54 32 30 30 30 4E 58 30 33 33 33  
53 54 32 30 30 30 4E 58 30 33 34 33  
53 54 32 30 30 30 4E 58 30 33 35 33  
53 54 32 30 30 30 4E 58 30 34 33 33  
53 54 31 30 30 30 4E 58 30 33 32 33  
53 54 31 30 30 30 4E 58 30 33 33 33  
53 54 31 30 30 30 4E 58 30 33 36 33  
53 54 31 30 30 30 4E 58 30 33 37 33  
53 54 31 30 30 30 4E 58 30 34 35 33  
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11.3.2 Mode Sense data  
The Mode Sense command provides a way for the drive to report its operating parameters to the initiator. The drive maintains four sets of  
mode parameters:  
1. Default values  
Default values are hard-coded in the drive firmware stored in flash E-PROM (nonvolatile memory) on the drive’s PCB. These default  
values can be changed only by downloading a complete set of new firmware into the flash E-PROM. An initiator can request and  
receive from the drive a list of default values and use those in a Mode Select command to set up new current and saved values, where  
the values are changeable.  
2. Saved values  
Saved values are stored on the drive’s media using a Mode Select command. Only parameter values that are allowed to be changed  
can be changed by this method. Parameters in the saved values list that are not changeable by the Mode Select command get their  
values from default values storage.  
When power is applied to the drive, it takes saved values from the media and stores them as current values in volatile memory. It is not  
possible to change the current values (or the saved values) with a Mode Select command before the drive achieves operating speed  
and is “ready.” An attempt to do so results in a “Check Condition” status.  
On drives requiring unique saved values, the required unique saved values are stored into the saved values storage location on the  
media prior to shipping the drive. Some drives may have unique firmware with unique default values also.  
On standard OEM drives, the saved values are taken from the default values list and stored into the saved values 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 the table in Section 11.3.2, 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.  
.
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.  
Note  
The following tables list the values of the data bytes returned by the drive in response to the Mode Sense command pages for SCSI  
implementation (see the SAS Interface Manual).  
DEF = Default value. Standard OEM drives are shipped configured this way.  
CHG = Changeable bits; indicates if default value is changeable.  
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Mode Sense data for 2TB drives  
BLOCK DESCRIPTOR:  
00 00 00 00 E8 E0 88 AF 00 00 00 00 00 00 02 00 (512E/ 512N)  
00 00 00 00 1D 1C 11 16 00 00 00 00 00 00 10 00 (4096N)  
DEF 81 0A C0 14 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 00 A0 00 00 00 00  
CHG 82 0E 00 00 FF FF 00 00 FF FF FF FF 00 00 00 00  
DEF 83 16 BB D0 00 00 00 00 03 80 04 C4 02 00 00 01 00 B4 00 18 40 00 00 00  
CHG 83 16 BB D0 00 00 00 00 03 80 04 C4 02 00 00 01 00 B4 00 18 40 00 00 00 (512E/ 512N)  
CHG 83 16 BB D0 00 00 00 00 03 80 04 C4 10 00 00 01 00 B4 00 18 40 00 00 00 (4096N)  
DEF 84 16 03 02 50 0A 00 00 00 00 00 00 00 00 00 00 00 00 00 00 1C 20 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 14 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 90 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 (512E/ 512N)  
CHG 88 12 A5 00 00 00 FF FF FF FF 00 00 30 00 00 00 00 00 00 00 (4096N)  
DEF 8A 0A 02 00 00 80 00 00 00 00 4F B0  
CHG 8A 0A 0F 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 46 00 07 D0 00 00 00 00 00 00 00 00 00 00  
CHG 99 0E 50 00 FF FF FF FF FF FF 00 00 00 00 00 00  
DEF 9A 26 00 06 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 58  
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 FC  
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 0A 00 80 0F 00 00 00 00 00 00 00  
CHG 80 0A B7 C0 8F 00 00 00 00 00 FF FF  
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Mode Sense data for 1TB drives  
BLOCK DESCRIPTOR:  
00 00 00 00 74 70 6D AF 00 00 00 00 00 00 02 00 (512E/ 512N)  
00 00 00 00 0E 8E 0D B6 00 00 00 00 00 00 10 00 (4096N)  
DEF 81 0A C0 14 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 00 A0 00 00 00 00  
CHG 82 0E 00 00 FF FF 00 00 FF FF FF FF 00 00 00 00  
DEF 83 16 BB D0 00 00 00 00 03 80 04 C4 02 00 00 01 00 B4 00 18 40 00 00 00  
CHG 83 16 BB D0 00 00 00 00 03 80 04 C4 02 00 00 01 00 B4 00 18 40 00 00 00 (512E/ 512N)  
CHG 83 16 BB D0 00 00 00 00 03 80 04 C4 10 00 00 01 00 B4 00 18 40 00 00 00 (4096N)  
DEF 84 16 03 02 50 05 00 00 00 00 00 00 00 00 00 00 00 00 00 00 1C 20 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 14 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 90 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 (512E/ 512N)  
CHG 88 12 A5 00 00 00 FF FF FF FF 00 00 30 00 00 00 00 00 00 00 (4096N)  
DEF 8A 0A 02 00 00 80 00 00 00 00 2E E0  
CHG 8A 0A 0F 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 46 00 07 D0 00 00 00 00 00 00 00 00 00 00  
CHG 99 0E 50 00 FF FF FF FF FF FF 00 00 00 00 00 00  
DEF 9A 26 00 06 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 58  
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 FC  
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 0A 00 80 0F 00 00 00 00 00 00 00  
CHG 80 0A B7 C0 8F 00 00 00 00 00 FF FF  
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11.4 Miscellaneous operating features and conditions  
The table below 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 9 Miscellaneous features  
Supported Feature or condition  
N
N
N
Y
N
Y
Y
Y
Y
N
Y
Automatic contingent allegiance  
Asynchronous event notification  
Synchronized (locked) spindle operation  
Segmented caching  
Zero latency read  
Queue tagging (up to 128 queue tags supported)  
Deferred error handling  
Parameter rounding (controlled by Round bit in Mode Select page 0)  
Reporting actual retry count in Extended Sense bytes 15, 16, and 17  
Adaptive caching  
SMP = 1 in Mode Select command needed to save RPL and rotational offset bytes  
Table 10 Miscellaneous status  
Supported Status  
Y
Y
Y
Y
Y
Y
Y
Y
N
N
Good  
Check condition  
Condition met/good  
Busy  
Intermediate/good  
Intermediate/condition met/good  
Reservation conflict  
Task set full  
ACA active  
ACA active, faulted initiator  
11.4.1 SAS physical interface  
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 10.  
Physical interface  
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Figure 11.  
SAS device plug dimensions  
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Figure 12.  
SAS device plug dimensions (detail)  
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11.4.2 Physical characteristics  
This section defines physical interface connector.  
11.4.3 Connector requirements  
Contact a 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 connector manufacturers.  
11.4.4 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.  
11.4.5 Pin descriptions  
This section provides a pin-out of the SAS device and a description of the functions provided by the pins.  
Table 11 SAS pin descriptions  
Pin  
Signal name  
Signal type  
Pin  
Signal name  
Signal type  
S1  
Port A Ground  
+Port A_in  
P1*  
P2*  
P3  
NC (reserved 3.3Volts)  
NC (reserved 3.3Volts)  
SAS Power Disable **  
Ground  
S2*  
S3*  
S4  
Diff. input 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  
Diff output pair  
P6  
Ground  
P7  
5 Volts charge  
5 Volts  
S8  
P8*  
P9*  
P10  
P11*  
P12  
P13  
P14*  
P15*  
S9*  
S10*  
S11  
S12*  
S13*  
S14  
5 Volts  
Diff. input pair  
Diff output pair  
-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  
** - Power Disable (T10 Industry Standard) for remote management of the end device. Allows power cycling / power saving to be controlled by the host via  
interface pin 3.  
NC - No connection in the drive.  
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11.4.6 SAS transmitters and receivers  
A typical SAS differential copper transmitter and receiver pair is shown in Figure 13. The receiver is AC coupling to eliminate ground shift  
noise.  
Figure 13.  
SAS transmitters and receivers  
11.4.7 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 supply 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.  
11.5 Signal characteristics  
This section describes the electrical signal characteristics of the drive’s input and output signals. See Section 11.4.5 for signal type and  
signal name information.  
11.5.1 Ready LED Out  
The Ready LED Out signal is driven by the drive as indicated in the table below.  
Table 12 Ready LED Out conditions  
Normal command activity  
Ready LED Meaning bit mode page 19h  
Spun down and no activity  
LED status  
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  
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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 resistor are external to the drive. See the next table for the output  
characteristics of the LED drive signals.  
Table 13 LED drive signal  
State  
Test condition  
Output voltage  
LED off, high  
LED on, low  
0 V £ VOH £ 3.6 V  
-100 μA < I < 100 μA  
OH  
I
= 15 mA  
0 £ VOL £ 0.225 V  
OL  
11.5.2 Differential signals  
The drive SAS differential signals comply with the intra-enclosure (internal connector) requirements of the SAS standard.  
The table below defines the general interface characteristics  
Table 14 General interface characteristics  
Characteristic  
Units  
3.0Gb/s  
6.0Gb/s  
12.0Gb/s  
Bit rate (nominal)  
Mbaud  
ps  
3,000  
333.3  
100  
6,000  
166.6  
100  
12,000  
83.3  
Unit interval (UI)(nominal)  
Impedance (nominal, differential )  
Transmitter transients, maximum  
Receiver transients, maximum  
ohm  
V
100  
± 1.2  
± 1.2  
± 1.2  
± 1.2  
± 1.2  
± 1.2  
V
11.6 SAS-3 Specification compliance  
Seagate SAS-3 compatible drives are compliant with the latest SAS-3 Specification (T10/BSR INCITS 519 rev. 06).  
The main difference from SAS-2 is the Tx and Rx training that allows the host and drive to adjust the amplitude and emphasis values to the  
channel. The receiver still employs Decision Feedback Equalizer (DFE) and Feed Forward Equalizer (FFE) circuitry to accomplish this  
training.  
11.7 Additional information  
Please contact the 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.  
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Seagate Technology LLC  
AMERICAS Seagate Technology LLC 10200 South De Anza Boulevard, Cupertino, California 95014, United States, 408-658-1000  
ASIA/PACIFIC Seagate Singapore International Headquarters Pte. Ltd. 7000 Ang Mo Kio Avenue 5, Singapore 569877, 65-6485-3888  
EUROPE, MIDDLE EAST AND AFRICA Seagate Technology SAS 16-18 rue du Dôme, 92100 Boulogne-Billancourt, France, 33 1-4186 10 00  
Publication Number: 100751316, Rev. D  
July 2015  
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