Publication number: 100708406, Rev. C October 2014
Seagate, Seagate Technology and the Wave logo are registered trademarks of Seagate Technology LLC in the United States and/or
other countries. Seagate 1200 SSD and SeaTools are either trademarks or registered trademarks of Seagate Technology LLC or one
of its affiliated companies in the United States and/or other countries. The FIPS logo is a certification mark of NIST, which does not
imply product endorsement by NIST, the U.S., or Canadian governments. All other trademarks or registered trademarks are the property of their respective owners.
No part of this publication may be reproduced in any form without written permission of Seagate Technology LLC.
Call 877-PUB-TEK1 (877-782-8351) to request permission.
When referring to drive capacity, one gigabyte, or GB, equals one billion bytes and one terabyte, or TB, equals one trillion bytes. Your
computer’s operating system may use a different standard of measurement and report a lower capacity. In addition, some of the
listed capacity is used for formatting and other functions, and thus will not be available for data storage. Actual quantities will vary
based on various factors, including file size, file format, features and application software. Actual data rates may vary depending on
operating environment and other factors. The export or re-export of hardware or software containing encryption may be regulated by
the U.S. Department of Commerce, Bureau of Industry and Security (for more information, visit
import and use outside of the U.S. Seagate reserves the right to change, without notice, product offerings or specifications.
This manual describes Seagate® 1200 SSD (Serial Attached SCSI) drives.
Seagate 1200 SSD 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 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 support services group as shown in See “Seagate® Technology Support Services” on page 6
Unless otherwise stated, the information in this manual applies to standard and Self-Encrypting Drive models.
2.5” Models - Limited Warranty with Media Usage2.5” Models - Managed Life
StandardSelf-EncryptingSED FIPS 140-2StandardSelf-EncryptingSED FIPS 140-2
Note.Previous generations of Seagate Self-Encrypting Drive models were called Full Disk Encryption (FDE) models
before a differentiation between drive-based encryption and other forms of encryption was necessary.
Note.The Self-Encrypting Drive models indicated on the cover of this product manual have provisions for “Security
of Data at Rest” based on the standards defined by the Trusted Computing Group
(see www.trustedcomputinggroup.org).
For more information on FIPS 140-2 Level 2 certification see Section 7.0 on page 49.
For product certification status visit - http://csrc.nist.gov/groups/STM/cmvp/documents/140-1/1401vend.htm.
High Endurance 2.5” Models -
1.8” Models -
Managed Life
Managed Life
Seagate 1200 SSD Product Manual, Rev. C 7
2.0Applicable 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 performance characteristics. Mounting by bottom holes must meet the
requirements of Section 10.3.
2.1Standards
The Seagate 1200 SSD 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 as tested by UL, CSA 60950-1 as tested by CSA, and EN60950-1
as tested by TUV.
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.
2.1.1Electromagnetic compatibility
The drive, as delivered, is designed for system integration and installation into a suitable enclosure prior to use. The drive is
supplied as a subassembly and is not subject to Subpart B of Part 15 of the FCC Rules and Regulations nor the Radio
Interference Regulations of the Canadian Department of Communications.
The design characteristics of the drive serve to minimize radiation when installed in an enclosure that provides reasonable
shielding. The drive is capable of meeting the Class B limits of the FCC Rules and Regulations of the Canadian Department
of Communications when properly packaged; however, it is the user’s responsibility to assure that the drive meets the
appropriate EMI requirements in their system. Shielded I/O cables may be required if the enclosure does not provide
adequate shielding. If the I/O cables are external to the enclosure, shielded cables should be used, with the shields
grounded to the enclosure and to the host controller.
2.1.1.1Electromagnetic susceptibility
As a component assembly, the drive is not required to meet any susceptibility performance requirements. It is the
responsibility of those integrating the drive within their systems to perform those tests required and design their system to
ensure that equipment operating in the same system as the drive or external to the system does not adversely affect the
performance of the drive. See Section 6.3, DC power requirements.
2.1.2Electromagnetic compliance
Seagate uses an independent laboratory to confirm compliance with the directives/standards for CE Marking and C-Tick
Marking. The drive was tested in a representative system for typical applications and comply with the Electromagnetic
Interference/Electromagnetic Susceptibility (EMI/EMS) for Class B products. The selected system represents the most
popular characteristics for test platforms. The system configurations include:
• Typical current use microprocessor
• Keyboard
• Monitor/display
• Printer
• Mouse
Although the test system with this Seagate model complies with the directives/standards, we cannot guarantee that all
systems will comply. The computer manufacturer or system integrator shall confirm EMC compliance and provide the
appropriate marking for their product.
Electromagnetic compliance for the European Union
If this model has the CE Marking it complies with the European Union requirements of the Electromagnetic Compatibility
Directive 2004/108/EC as put into place on 20 July 2007.
Seagate 1200 SSD Product Manual, Rev. C 8
Australian C-Tick
If this model has the C-Tick Marking it complies with the Australia/New Zealand Standard AS/NZ CISPR22 and meets the
Electromagnetic Compatibility (EMC) Framework requirements of
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.
2.1.3European 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 ef
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.
fective July 2006.
Australia’s Spectrum Management Agency (SMA).
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.
2.1.4China 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 homogenous 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 homogenous material level) is over the threshold
defined by the China RoHS MCV Standard.
Seagate 1200 SSD Product Manual, Rev. C 9
2.2Reference documents
SCSI Commands Reference ManualSeagate part number: 100293068
SAS Interface ManualSeagate part number: 100293071
ANSI SAS Documents
SFF-814454mm x 78.5mm Form Factor with micro serial connector
SFF-82232.5” Drive Form Factor with Serial Connector
SFF-8460HSS Backplane Design Guidelines
SFF-8470Multi Lane Copper Connector
SFF-8482SAS Plug Connector
ANSI INCITS.xxx Serial Attached SCSI (SAS-3) Standard (T10/2212-D)
ISO/IEC 14776-xxx SCSI Architecture Model-5 (SAM-5) Standard (T10/2104-D)
ISO/IEC 14776-xxx SCSI Primary Commands-4 (SPC-4) Standard (T10/1731-D)
ISO/IEC 14776-xxx SCSI Block Commands-3 (SBC-3) Standard (T10/1799-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)
Self-Encrypting Drives Reference ManualSeagate part number: 100515636
In case of conflict between this document and any referenced document, this document takes precedence.
Seagate 1200 SSD Product Manual, Rev. C 10
3.0General description
Seagate 1200 SSD drives provide high performance, high capacity data storage for a variety of systems with a Serial
Attached SCSI (SAS) interface. The Serial Attached SCSI interface is designed to meet next-generation computing demands
for performance, scalability, flexibility and high-density storage requirements.
Seagate 1200 SSD 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. Seagate 1200 SSD 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 drives. This allows users 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).
Note.Never disassemble and do not attempt to service items in the enclosure. The drive does not contain user-
replaceable parts. Opening for any reason voids the drive warranty..
3.1Standard features
Seagate 1200 SSD drives have the following standard features:
• 1.5 / 3.0 / 6.0 / 12.0*Gb Serial Attached SCSI (SAS) interface (* 12.0 Gb only available on 2.5” models)
• Integrated dual port SAS controller supporting the SCSI protocol
• Support for SAS expanders and fanout adapters
• Firmware downloadable using the SAS interface
• 128 - deep task set (queue)
• Supports up to 32 initiators
• Jumperless configuration
• User-selectable logical block size (512, 520, 524, 528, 4096, 4160, 4192, or 4224 bytes per logical block)
• Industry standard SFF 1.8 and 2.5-inch dimensions
• ECC, LDPC, and Micro-RAID Error Recovery
• No preventive maintenance or adjustments required
• Self diagnostics performed when power is applied to the drive
• Vertical, horizontal, or top down mounting
• Drive Self Test (DST)
• Parallel flash access channels
• Power loss data protection
• Thin Provisioning with Block Unmap Support
• Silent operation
• Lifetime Endurance Management (available by default on Managed Life models)
Seagate 1200 SSD Self-Encrypting Drive models have the following additional features:
• Automatic data encryption/decryption
• Controlled access
• Random number generator
• Drive locking
• Up to 16 independent data bands
• Cryptographic erase of user data for a drive that will be repurposed or scrapped
• Authenticated firmware download
• SANITIZE command support
Seagate 1200 SSD Product Manual, Rev. C 11
3.2Media description
The media used on the drive consists of Multi Layer Cell (MLC) NAND Flash for improved reliability and performance.
• Up to 1200MB/s maximum instantaneous data transfers on 12Gb capable configurations.
• Background processing of queue
• Non-Volatile Write Cache
Note.There is no significant performance difference between Self-Encrypting Drive and standard (non-Self-Encrypting
Drive) models.
3.4Warranty
• "Managed Life" or "Limited Warranty with Media Usage" warranty options
[1]
[1] Warranty terms will vary based on type of warranty chosen: “Managed Life” or “Limited Warranty with Media Usage”.
Consult the Seagate sales representative for warranty terms and conditions.
3.5Formatted capacities
Standard OEM models are formatted to 512 bytes per block. The block size is selectable at format time. Supported block
sizes are 512, 520, 524, 528, 4096, 4160, 4192, and 4224. Users having the necessary equipment may modify the data
block size before issuing a format command and obtain different formatted capacities than those listed.
To provide a stable target capacity environment and at the same time provide users with flexibility if they choose, Seagate
recommends product planning in one of two modes:
Seagate designs specify capacity points at certain block sizes that Seagate guarantees current and future products will
meet. We recommend customers use this capacity in their project planning, as it ensures a stable operating point with
backward and forward compatibility from generation to generation. The current guaranteed operating points for this product
are shown below. The Capacity stated is identical when the drive is formatted with or without PI enabled.
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.
Seagate 1200 SSD Product Manual, Rev. C 12
3.7Factory-installed options
OEMs may order the following items which are incorporated at the manufacturing facility during production or packaged
before shipping. Some of the options available are (not an exhaustive list of possible options):
• Other capacities can be ordered depending on LBA size requested and other factors.
• Single-unit shipping pack. The drive is normally shipped in bulk packaging to provide maximum protection against transit
damage. Units shipped individually require additional protection as provided by the single unit shipping pack. Users planning single unit distribution should specify this option.
• The Safety and Regulatory Agency Specifications, part number 75789512, is usually included with each standard OEM
drive shipped, but extra copies may be ordered.
3.8Thin Provisioning
3.8.1Logical Block Provisioning
The drive is designed with a feature called Thin Provisioning. Thin Provisioning is a technique which does not require
Logical Blocks to be associated to Physical Blocks on the storage medium until such a time as needed. The use of Thin
Provisioning is a major factor in SSD products because it reduces the amount of wear leveling and garbage collection that
must be performed. The result is an increase in the products endurance. For more details on Logical Block Provisioning and
Thin Provisioning, Reference the SBC-3 document provided by the T-10 committee.
3.8.2Thin Provisioning capabilities
The level of Thin Provisioning support may vary by product model. Devices that support Thin Provisioning are allowed to
return a default data pattern for read requests made to Logical Blocks that have not been mapped to Physical Blocks by a
previous WRITE command.
In order to determine if Thin Provisioning is supported and what features of it are implemented requires the system to send a
READ CAPACITY 16 (9Eh) command to the drive. Thin Provisioning and the READ CAPACITY 16 (9Eh) command is
defined in the Seagate SCSI Command Reference 100293068.
A logical block provisioning management enabled (LBPME) bit set to one indicates that the logical unit implements logical
block provisioning management. An LBPME bit set to zero indicates that the logical unit is fully provisioned and does not
implement logical block provisioning management.
A logical block provisioning read zeros (LBPRZ) bit set to one indicates that, for an unmapped LBA specified by a read
operation, the device server sends user data with all bits set to zero to the data-in buffer. An LBPRZ bit set to zero indicates
that, for an unmapped LBA specified by a read operation, the device server may send user data with all bits set to any value
to the data-in buffer.
3.8.3UNMAP
The UNMAP command requests that the device server break the association of a specific Logical Block address from a
Physical Block, thereby freeing up the Physical Block from use and no longer requiring it to contain user data. An unmapped
block will respond to a READ command with data that is determined by the setting of the LBPRZ bit in the READ CAPACITY
parameter data.
3.8.4FORMAT UNIT command
A device which supports Thin Provisioning will be capable of performing a SCSI FORMAT UNIT command which allocates
Logical Blocks Addresses that are not linked to Physical Block Locations. A FORMAT command will cause all LBAs to
become unmapped.
3.8.5Protection Information (PI) and Security (SED)
The requirements in this section apply to any device which supports LBA unmapping.
Seagate 1200 SSD Product Manual, Rev. C 13
In SCSI devices, umapped LBAs are defined as part of the Thin Provisioning model. Support of the Thin Provisioning model
is indicated by the LBPME bit having a value of '1' in the READ CAPACITY (16) parameter data.
When a region of LBA's are erased via cryptographic erase, as part of the erase, the drive shall unmap those LBAs.
If the host attempts to access an unmapped or trimmed LBA, the drive shall return scrambled data. For a given LBA, the data
shall be identical from access to access, until that LBA is either updated with actual data from the host or that LBA is
cryptographically erased. The drive shall report a value of '0' in the LBPRZ field returned in the READ CAPACITY (16)
parameter data.
If the host attempts to access an unmapped LBA on a drive that has been formatted with Protection Information (PI), the
drive shall return scrambled PI data for that LBA. Depending on the value of the RDPROTECT field in the data-access
command CDB, this may result in the drive returning a standard PI error to the host.
If the host reduces the addressable capacity of the drive via a MODE SELECT command, the drive shall unmap or trim any
LBA within the inaccessible region of the device.
Additionally, an UNMAP command is not permitted on a locked band.
Drive Configuration
StandardSED
PI SettingDisabledEnabledDisabledEnabled
PROT_EN bit0101
LBPME bit1111
LBPRZ bit1100
PI Check RequestedN/AYesNoN/AYesNo
DATA Returned for
Thin Provisioned LBA
PI Returned for
Thin Provisioned LBA
PI Check PerformedN/ANoNoN/AYesNo
Error reported to HostNoNoNoNoYesNo
0x000x000x00RandomNoneRandom
None0xFF0xFFNoneNone
Scrambled
PI data
Seagate 1200 SSD Product Manual, Rev. C 14
4.0Performance characteristics
This section provides detailed information concerning performance-related characteristics and features of Seagate 1200
SSD drives.
4.1Internal drive characteristics
Flash Memory TypeNAND MLC
Emulated LBA Size512, 520, 524, 528, 4096, 4160, 4192 or 4224
Native Programmable
Page Size8192 User Bytes
Map Unit Size4096
Default Transfer
Alignment Offset0
4.2Performance characteristics
4.2.1Response time
Response time measurements are taken with nominal power at 25°C ambient temperature. The typical values in the table
below are defined as follows:
• Page-to-page response time is an average of all possible page-to-page accesses for a sequentially preconditioned
drive.
• Average response time is a true statistical random average of at least 5000 measurements of accesses between programmable pages on a randomly preconditioned drive.
Table 2 Typical Response Time (μsec)
All capacities
1,2
ReadWrite
Average
Page to Page3944
Average Latency18313
1.Execution time measured from receipt of the Command to the Response.
2.Assumes no errors.
3.Typical response times are measured under nominal conditions of temperature and voltage as measured on a representative
sample of drives.
Typical
3
19245
These drives are designed to provide the highest possible performance under typical conditions. How-
ever, due to the nature of Flash memory technologies there are many factors that can result in
values different than those stated in this specification.
2.
Seagate 1200 SSD Product Manual, Rev. C 15
4.2.2FORMAT UNIT command execution time for 512-byte LBA’s (minutes)
The device may be formatted as either a Thin Provisioned device or a Fully Provisioned device.
The default format is Thin
Provisioned and is recommended for most applications. Thin Provisioning provides the most flexibility for the device to
manage the flash medium to maximize endurance.
Table 3 Maximum FORMAT UNIT Times (minutes)
Configuration
Non-SED
Non-SED
Non-SED
Non-SED
SED
SED
SED
SED
4.2.3Performance
Standard 2.5” Models -
Managed Life
Maximum Burst Transfer Rate1200MB/s
Peak sequential 128KB read/write
data transfer rate (MB/s max)
Sustained sequential 128KB read/
write data transfer rate (MB/s)
Peak 4KB random read/write
command rate (IOPs)
Sustained 4KB random read/write
command rate (IOPs)
Sustainable 4KB Random combined
IOPS for 5 year Endurance
(65%/35% R/W, 70% Duty Cycle)
Format ModeDCRT BitIP Bit800GB400GB200GB100GB
(Default) Thin ProvisionedDCRT = 0IP = 05555
(Default) Thin ProvisionedDCRT = 1IP = 05555
Fully ProvisionedDCRT = 0IP = 110101010
Fully ProvisionedDCRT = 1IP = 110101010
(Default) Thin ProvisionedDCRT = 0IP = 05555
(Default) Thin ProvisionedDCRT = 1IP = 05555
Fully ProvisionedDCRT = 0IP = 1430430430430
Fully ProvisionedDCRT = 1IP = 1280280280280
Notes
[1]750/500750/400
[1]750/195750/95750/45
[2]110,000/40,000110,000/25,000
[2]110,000/15,000110,000/7500110,000/3700
[3]60,00050,000
ST800FM0013
ST800FM0023
ST800FM0033
ST400FM0013
ST400FM0033
ST200FM0013
ST200FM0033
Standard 2.5” Models -
Limited Warranty with Media Usage
Maximum Burst Transfer Rate1200MB/s
Peak sequential 128KB read/write
data transfer rate (MB/s max)
Sustained sequential 128KB read/
write data transfer rate (MB/s)
Peak 4KB random read/write
command rate (IOPs)
Sustained 4KB random read/write
command rate (IOPs)
Sustainable 4KB Random combined
IOPS for 5 year Endurance
(65%/35% R/W, 70% Duty Cycle)
Notes
[1]
[1]
[2]
[2]
[3]60,00050,000
ST800FM0043
ST800FM0053
ST800FM0063
110,000/40,000110,000/25,000
ST400FM0053
ST400FM0073
750/500750/400
ST200FM0053
ST200FM0073
Seagate 1200 SSD Product Manual, Rev. C 16
Standard 1.8” Models -
Managed Life
Maximum Burst Transfer Rate600MB/s
Peak sequential 128KB read/write
data transfer rate (MB/s max)
Sustained sequential 128KB read/
write data transfer rate (MB/s)
Peak 4KB random read/write
command rate (IOPs)
Sustained 4KB random read/write
command rate (IOPs)
Sustainable 4KB Random combined
IOPS for 5 year Endurance
(65%/35% R/W, 70% Duty Cycle)
Standard 1.8” Models -
Limited Warranty with Media Usage
Maximum Burst Transfer Rate600MB/s
Peak sequential 128KB read/write
data transfer rate (MB/s max)
Sustained sequential 128KB read/
write data transfer rate (MB/s)
Peak 4KB random read/write
command rate (IOPs)
Sustained 4KB random read/write
command rate (IOPs)
Sustainable 4KB Random combined
IOPS for 5 year Endurance
(65%/35% R/W, 70% Duty Cycle)
Notes
[1]550/500
[1]550/195550/95
[2]110,000/30,000
[2]110,000/15,000110,000/7500
[3]60,000
Notes
[1]
[1]
[2]
[2]
[3]60,000
ST400FM0023
ST400FM0043
ST400FM0063
ST400FM0083
550/500
110,000/30,000
ST200FM0023
ST200FM0043
ST200FM0063
ST200FM0083
High Endurance 2.5” Models -
Managed Life
Maximum Burst Transfer Rate1200MB/s
Peak sequential 128KB read/write
data transfer rate (MB/s max)
Sustained sequential 128KB read/
write data transfer rate (MB/s)
Peak 4KB random read/write
command rate (IOPs)
Sustained 4KB random read/write
command rate (IOPs)
Sustainable 4KB Random combined
IOPS for 5 year Endurance
(65%/35% R/W, 70% Duty Cycle)
Notes
[1]750/500750/400
[1]750/195750/95750/45
[2]110,000/50,000110,000/50,000
[2]110,000/15,000110,000/7500110,000/3700
[3]70,00060,000
ST400FM0113
ST400FM0123
ST200FM0113
ST200FM0123
ST100FM0113
ST100FM0123
Seagate 1200 SSD Product Manual, Rev. C 17
High Endurance 2.5” Models -
Limited Warranty with Media Usage
Maximum Burst Transfer Rate1200MB/s
Peak sequential 128KB read/write
data transfer rate (MB/s max)
Sustained sequential 128KB read/
write data transfer rate (MB/s)
Peak 4KB random read/write
command rate (IOPs)
Sustained 4KB random read/write
command rate (IOPs)
Sustainable 4KB Random combined
IOPS for 5 year Endurance
(65%/35% R/W, 70% Duty Cycle)
Notes
[1]
[1]
[2]
[2]
[3]70,00060,000
ST400FM0093
ST400FM0103
750/500750/400
110,000/50,000110,000/50,000
ST200FM0093
ST200FM0103
ST100FM0093
ST100FM0103
[1]Testing performed at Queue Depth = 128, Sequentially Preconditioned drive, using IOMeter 2006.7.27.
[2]Testing performed at Queue Depth = 128, Randomly Preconditioned drive, using IOMeter 2006.7.27.
[3]Testing performed at Queue Depth = 128, Non-Preconditioned drive, using IOMeter 2006.7.27.
Note.IOMeter is available at h
ttp://www.iometer.org/ or http://sourceforge.net/projects/iometer/.
IOMeter is licensed under the Intel Open Source License and the GNU General Public License. Intel does not
endorse any IOMeter results.
Peak performance is defined as the typical best case performance that the product will be able to achieve when
the product is preconditioned as mentioned and host commands are aligned on 4KB boundaries.
Sustained performance is defined as the worst case performance that the product will be able to achieve when the product is
preconditioned
as mentioned and host commands are aligned on 4KB boundaries. For models that support Lifetime
Endurance Management, write values also take into account the worst case performance throttling that may occur to ensure
the product meets specified reliability specifications.
Due to the nature of Flash memory technologies there are many factors that can result in values different than those stated
in this specification. Some discrepancies can be caused by bandwidth limitations in the host adapter, operating system, or
driver limitations. It is not the intent of this manual to cover all possible causes of performance discrepancies.
When evaluating performance of SSD devices, it is recommended to measure performance of the device in a method that
resembles the targeted application using real world data and workloads. Test time should also be adequately large to ensure
that sustainable metrics and measures are obtained.
4.3Start/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 10 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 10 seconds (excluding the error recovery procedure).
If the drive receives a START STOP UNIT command with the START bit and IMMED bit equal to 1 and does not receive a
NOTIFY (ENABLE SPINUP) primitive within 5 seconds, the drive fails the START STOP UNIT command.
The START STOP UNIT command may be used to command the drive to stop. Stop time is 3 seconds (maximum) from
removal of DC power. SCSI stop time is 3 seconds. There is no power control switch on the drive.
Seagate 1200 SSD Product Manual, Rev. C 18
4.4Cache control
All default cache mode parameter values (Mode Page 08h) for standard OEM versions of this drive family are given in
Section 11.3.2.
4.4.1Caching write data
Write caching is a write operation by the drive that makes use of a drive buffer storage area where the data to be written to
the medium is stored while the drive performs the WRITE command.
If 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.
Data that has not been written to the medium is protected by a back up power source which provides the ability of the data to
be written to non-volatile medium in the event of an unexpected power loss.
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.
4.4.2Prefetch operation
If the Prefetch feature is enabled, data in contiguous logical blocks on the medium 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
medium 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.
Seagate 1200 SSD Product Manual, Rev. C 19
5.0Reliability 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.
Read Error Rates
Interface error rate:Less than 1 error in 1012 bits transferred
Mean Time Between Failure (MTBF): 2,000,000 hours
Annualized Failure Rate (AFR):0.44%
Preventive maintenance:None required
Typical Data Retention with
Power removed (at 40C)
Endurance Rating:
1
Unrecovered DataLess than 1 LBA in 1016 bits transferred
Miscorrected DataLess than 1 LBA in 10
21
bits transferred
3 months
2
4
Method 1: Full drive writes per day 10 (all standard models)
25 (only High Endurance models)
1. Error rate specified with automatic retries and data correction with ECC enabled and all flaws reallocated.
2. As NAND Flash devices age with use, the capability of the media to retain a programmed value begins to deteriorate.
This deterioration is affected by the number of times a particular memory cell is programmed and subsequently erased.
When a device is new, it has a powered off data retention capability of up to several years. With use the retention capability of the device is reduced. Temperature also has an effect on how long a Flash component can retain its programmed
value with power removed. At high temperature the retention capabilities of the device are reduced. Data retention is
not an issue with power applied to the SSD. The SSD drive contains firmware and hardware features that can monitor
and refresh memory cells when power is applied.
3. Endurance rating is the expected amount of host data that can be written by product when subjected to a specified work-
load at a specified operating and storage temperature over the specified product life. For the specific workload to achieve
this level of endurance, please reference JEDEC Specification JESD218. TBW is defined as 1x10
4. Limited Warranty with Media Usage provides coverage for the warranty period or until the SSD Percentage Used
Endurance Indicator, as defined in Section 5.2.7, reaches 100 whichever comes first.
12
Bytes.
Seagate 1200 SSD Product Manual, Rev. C 20
5.1Error 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 require-
ments."
• 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.
5.1.1Unrecoverable Errors
An unrecoverable data error is defined as a failure of the drive to recover data from the media. These errors occur due to
read 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.
5.1.2Interface errors
An interface error is defined as a failure of the receiver on a port to recover the data as transmitted by the device port
connected to the receiver. The error may be detected as a running disparity error, illegal code, loss of word sync, or CRC
error.
5.2Endurance Management
Customer satisfaction with Solid State Drives can be directly related to the internal algorithms which an SSD uses to manage
the limited number of Program-Erase (PE) cycles that NAND Flash can withstand. These algorithms consist of Wearleveling,
Garbage Collection, Write Amplification, Unmap, Data Retention, Lifetime Endurance Management.
5.2.1Wear Leveling
Wear Leveling is a technique used by the drive to ensure that all Flash cells are written to or exercised as evenly as possible
to avoid any hot spots where some cells are used up faster than other locations. Wear Leveling is automatically managed by
the drive and requires no user interaction. The Seagate algorithm is tuned to operate only when needed to ensure reliable
product operation.
5.2.2Garbage Collection
Garbage Collection is a technique used by the drive to consolidate valid user data into a common cell range freeing up
unused or obsolete locations to be erased and used for future storage needs. Garbage Collection is automatically managed
by the drive and requires no user interaction. The Seagate algorithm is tuned to operate only when needed to ensure reliable
product operation.
5.2.3Write Amplification
While Write Amplification is not an algorithm, it is a major characteristic of SSD's that must be accounted for by all the
algorithms that the SSD implements. The Write Amplification Factor of an SSD is defined as the ratio of Host/User data
requested to be written to the actual amount of data written by the SSD internal to account for the user data and the
housekeeping activities such as Wear Leveling and Garbage Collection. The Write Amplification Factor of an SSD can also
be directly affected by the characteristics of the host data being sent to the SSD to write. The best Write Amplification Factor
is achieved for data that is written in sequential LBA's that are aligned on 4KB boundaries. The worst case Write
Amplification Factor typically occurs for randomly written LBA's of transfer sizes that are less than 4KB and that originate on
LBA's that are not on 4KB boundaries.
5.2.4UNMAP
A new SCSI command has been added to the SSD as part of the Thin Provisioning feature set. Use of the UNMAP
command reduces the Write Amplification Factor of the drive during housekeeping tasks such as Wear Leveling and
Garbage Collection. This is accomplished because the drive does not need to retain data which has been classified by the
host as obsolete.
Seagate 1200 SSD Product Manual, Rev. C 21
5.2.5Data Retention
Data Retention is another major characteristic of SSD's that must be accounted for by all the algorithms that the SSD
implements. While powered up, the Data Retention of SSD cells are monitored and rewritten if the cell levels decay to an
unexpected level. Data Retention when the drive is powered off is affected by Program and Erase (PE) cycles and the
temperature of the drive when stored.
5.2.6Lifetime Endurance Management (Available on select models)
As stated in Section 5.2, an SSD has a limited number of Program and Erase (PE) cycles that are capable. In worse case
applications, the write workload could be such that the drive experiences a high Write Amplification Factor that could lead to
potential wear out prior to the drive achieving it's expected field life. Additionally, the Data Retention spec of the SSD needs
to be considered to ensure the spec is met once the drive is worn out. Seagate has implemented a Lifetime Endurance
Management technique which helps OEMS and user to avoid early wear out. By monitoring the write workload being sent to
the drive, the drive can add additional response time to WRITE commands to provide a sustainable level of performance that
is capable of being sustained for the life of the drive. Most users may never see this added response time in their
applications.
5.2.7SSD Percentage Used Endurance Indicator
An application can interrogate the drive through the host to determine an estimate of the percentage of device life that has
been used. To accomplish this, issue a LOG SENSE command to log page 0x11. This allows applications to read the
contents of the Percentage Used Endurance Indicator parameter code. The Percentage Used Endurance Indicator is defined
in the T10 document SBC-3 available from the T10 committee.
5.3Reliability and service
Integrators can enhance the reliability of Seagate 1200 SSD drives by ensuring that the drive receives adequate cooling.
Section 6.0 provides temperature measurements and other information that may be used to enhance the service life of the
drive. Section 10.2 provides recommended air-flow information.
5.3.1Annualized Failure Rate (AFR) and Mean Time Between Failure (MTBF)
The production drive shall achieve an AFR of 0.44% (MTBF of 2,000,000 hours) when operated in an environment that
ensures the case temperatures do not exceed the values specified in Section 6.5. Operation at case temperatures outside
the specifications in Section 6.5 may increase the product AFR (decrease the MTBF). The AFR (MTBF) is a population
statistic not relevant to individual units.
The AFR (MTBF) specification is based on the following assumptions for Enterprise Storage System environments:
• 8760 power-on hours per year.
• 250 average on/off cycles per year.
• Operations at nominal voltages.
• Systems will provide adequate cooling to ensure the case temperatures specified in Section 6.5 are not exceeded. Tem-
peratures outside the specifications in Section 6.5 will increase the product AFR and decrease the MTBF.
5.3.2Preventive maintenance
No routine scheduled preventive maintenance is required.
5.3.3Hot plugging the drive
When a drive is powered on by switching the power or hot plugged, the drive runs a self test before attempting to
communicate on its’ interfaces. When the self test completes successfully, the drive initiates a Link Reset starting with OOB.
An attached device should respond to the link reset. If the link reset attempt fails, or any time the drive looses sync, the drive
initiated link reset. The drive will initiate link reset once per second but alternates between port A and B. Therefore each port
will attempt a link reset once per 2 seconds assuming both ports are out of sync.
If the self-test fails, the drive does not respond to link reset on the failing port.
Note.It is the responsibility of the systems integrator to assure that no temperature, energy, voltage hazard, or ESD
potential hazard is presented during the hot connect/disconnect operation. Discharge the static electricity from
the drive carrier prior to inserting it into the system.
Seagate 1200 SSD Product Manual, Rev. C 22
5.3.4S.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 administrators
to back up the data before an actual failure occurs.
Note.The drive’s firmware monitors specific attributes for degradation over time but can’t predict instantaneous drive
failures.
Each monitored attribute has been selected to monitor a specific set of failure conditions in the operating performance of the
drive and the thresholds are optimized to minimize “false” and “failed” predictions.
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.
An application 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.
An application 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 REZERO UNIT command
resets the timer.
Performance impact
S.M.A.R.T. attribute data is saved to the media 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 media is interruptible. The maximum on-line only processing delay is
summarized below
Table 1:
Maximum processing delay
Fully-enabled delay
DEXCPT = 0
S.M.A.R.T. delay times75 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 appropriate 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.
Seagate 1200 SSD Product Manual, Rev. C 23
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