Seagate ST500LT025 User manual
Product Manual
Momentus® Thin
Standard models
ST500LT012
ST320LT012
ST250LT012
Self-Encrypting Drive models
ST500LT025
ST320LT025
ST250LT025
SED (FIPS 140-2) models
Review Pending
ST500LT015
ST320LT015
ST250LT015
Gen 9
100685367
Rev. G
March 2013
Document Revision History
Revision Date Description of Change
Rev. A 09/19/2011 Initial release.
Rev. B 02/10/2012 5, 7, 14, 22 & 25-26.
Rev. C 04/25/2012 5, 8-9 & 17.
Rev. D 05/21/2012 5, 7 & 16.
Rev. E 07/09/2012 1, 3, 5-7, 13 & 18-19.
Rev. F 08/21/2012 11.
Rev. G 03/07/2013 1, 5, 12 & 16-17.
© 2013 Seagate Technology LLC. All rights reserved.
Publication number: 100685367, Rev. G March 2013
Seagate, Seagate Technology and the Wave logo are registered trademarks of Seagate Technology LLC in the United States and/or
other countries. Momentus Thin 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 www.bis.doc.gov), and controlled for import
and use outside of the U.S. Seagate reserves the right to change, without notice, product offerings or specifications.
CONTENTS
SEAGATE TECHNOLOGY SUPPORT SERVICES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
1.0 INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
1.1 ABOUT THE SERIAL ATA INTERFACE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2.0 DRIVE SPECIFICATIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.1 F
2.2 PHYSICAL ORGANIZATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.3 RECORDING AND INTERFACE TECHNOLOGY. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.4 PHYSICAL CHARACTERISTICS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.5 SEEK TIME . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.6 START/STOP TIMES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.7 POWER SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.8 E
2.9 ACOUSTICS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
2.10 ELECTROMAGNETIC IMMUNITY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
2.11 RELIABILITY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
2.12 AGENCY CERTIFICATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
2.13 ENVIRONMENTAL PROTECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
2.14 CORROSIVE ENVIRONMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
ORMATTED CAPACITY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2.1.1 LBA mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2.7.1 Power consumption . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.7.2 Conducted noise . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.7.3 Voltage tolerance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.7.4 Power management modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
NVIRONMENTAL SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
2.8.1 Shock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
2.8.2 Vibration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
2.9.1 Test for prominent discrete tones (PDTs) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
2.12.1 Safety certification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
2.12.2 Electromagnetic Compatibility (EMC). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
2.12.3 FCC verification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
2.13.1 European Union Restriction of Hazardous Substances (RoHS) Directive. . . . . 13
2.13.2 China Restriction of Hazardous Substances (RoHS) Directive . . . . . . . . . . . . 13
3.0 CONFIGURING AND MOUNTING THE DRIVE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
3.1 HANDLING AND STATIC-DISCHARGE PRECAUTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
3.2 CONFIGURING THE DRIVE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
3.2.1 Serial ATA Cables and Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
3.3 DRIVE MOUNTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
4.0 ABOUT FIPS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
5.0 SERIAL ATA (SATA) INTERFACE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
5.1 HOT-PLUG COMPATIBILITY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
5.2 SERIAL ATA DEVICE PLUG CONNECTOR PIN DEFINITIONS . . . . . . . . . . . . . . . . . . . . . . . . . . 20
5.3 SUPPORTED ATA COMMANDS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
5.3.1 Identify Device command. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
5.3.2 Set Features command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
5.3.3 S.M.A.R.T. commands. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
MOMENTUS THIN SATA PRODUCT MANUAL, REV. G III
FIGURES
FIGURE 1TYPICAL 5V STARTUP AND OPERATION CURRENT PROFILE . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
FIGURE 2ATTACHING SATA CABLING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
FIGURE 3MOUNTING DIMENSIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
FIGURE 4MOUNTING DIMENSIONS (FOR FIPS 140-2 MODELS). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
FIGURE 5EXAMPLE OF FIPS TAMPER EVIDENCE LABELS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
MOMENTUS THIN SATA PRODUCT MANUAL, REV. G IV
Seagate Technology Support Services
For information regarding online support and services, visit
Available services include:
• Presales & Technical support
• Global Support Services telephone numbers & business hours
• Authorized Service Centers
For information regarding Warranty Support, visit:
For information regarding data recovery services, visit
For Seagate OEM and Distribution partner portal, visit:
For Seagate reseller portal, visit:
http://www.seagate.com/partners/my-spp-dashboard/
http://www.seagate.com/support/warranty-and-replacements/
http://www.seagate.com/about/contact-us/technical-support/
http://www.seagate.com/services-software/data-recovery-services/
http://www.seagate.com/partners/
Momentus Thin SATA Product Manual, Rev. G 1
1.0 INTRODUCTION
This manual describes the functional, mechanical and interface specifications for the following Seagate Momentus® Thin model drives:
Standard models Standard SED models
ST500LT012 ST500LT025 ST500LT015
ST320LT012 ST320LT025 ST320LT015
ST250LT012 ST250LT025 ST250LT015
Previous generations of Seagate Self-Encrypting Drive models were called Full Disk Encryption
NOTE
(FDE) models before a differentiation between drive-based encryption and other forms of encryption
was necessary.
The Self-Encrypting Drive models indicated on the cover of this product manual have provisions for
NOTE
“Security of Data at Rest” based on the standards defined by the Trusted Computing Group (see
www.trustedcomputinggroup.org).
SED (FIPS 140-2) models
(Review Pending)
For more information on FIPS 140-2 Level 2 certification
About FIPS on page 18.
These drives provide the following key features:
5400-RPM spindle speed.
16MB buffer.
Quiet operation. Fluid Dynamic Bearing (FDB) motor.
High instantaneous (burst) data-transfer rates (up to 3Gb/s).
Perpendicular recording technology.
State-of-the-art cache and on-the-fly error-correction algorithms.
Native Command Queuing (NCQ) with command ordering.
Full-track multiple-sector transfer capability without local processor intervention.
1000 Gs nonoperating shock and 400 Gs of operating shock.
SeaTools
The 3D Defense System™, which includes Drive Defense, Data Defense and Diagnostic Defense,
TM
diagnostic software performs a drive self-test that eliminates unnecessary drive returns.
offers the industry’s most comprehensive protection for disk drives.
Support for S.M.A.R.T. drive monitoring and reporting.
Support for Read Multiple and Write Multiple commands.
Worldwide Name (WWN) capability uniquely identifies the drive.
Momentus Thin 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.
There is no significant performance difference between Self-Encrypting Drive and standard (non-Self-Encrypting Drive) models.
MOMENTUS THIN SATA PRODUCT MANUAL, REV. G 2
1.1 ABOUT THE SERIAL ATA INTERFACE
The Serial ATA interface provides several advantages over the traditional (parallel) ATA interface. The primary advantages include:
Easy installation and configuration with true plug-and-play connectivity. It is not necessary to set any jumpers or other configuration
options.
Thinner and more flexible cabling for improved enclosure airflow and ease of installation.
Scalability to higher performance levels.
In addition, Serial ATA makes the transition from parallel ATA easy by providing legacy software support. Serial ATA was designed to
allow you to install a Serial ATA host adapter and Serial ATA disk drive in your current system and expect all of your existing
applications to work as normal.
The Serial ATA interface connects each disk drive in a point-to-point configuration with the Serial ATA host adapter. There is no master/
slave relationship with Serial ATA devices like there is with parallel ATA. If two drives are attached on one Serial ATA host adapter, the
host operating system views the two devices as if they were both “masters” on two separate ports. This essentially means both drives
behave as if they are Device 0 (master) devices.
The host adapter may, optionally, emulate a master/slave environment to host software where two
devices on separate Serial ATA ports are represented to host software as a Device 0 (master) and
NOTE
The Serial ATA host adapter and drive share the function of emulating parallel ATA device behavior to provide backward compatibility
with existing host systems and software. The Command and Control Block registers, PIO and DMA data transfers, resets, and interrupts
are all emulated.
Device 1 (slave) accessed at the same set of host bus addresses. A host adapter that emulates a
master/slave environment manages two sets of shadow registers. This is not a typical Serial ATA
environment.
The Serial ATA host adapter contains a set of registers that shadow the contents of the traditional device registers, referred to as the
Shadow Register Block. All Serial ATA devices behave like Device 0 devices. For additional information about how Serial ATA emulates
parallel ATA, refer to the Serial ATA International Organization: Serial ATA (Revision 2.6). The specification can be downloaded from
www.serialata.org.
MOMENTUS THIN SATA PRODUCT MANUAL, REV. G 3
DRIVE SPECIFICATIONS
2.0 DRIVE SPECIFICATIONS
Unless otherwise noted, all specifications are measured under ambient conditions, at 25°C, and nominal power. For convenience, the
phrases the drive and this drive are used throughout this manual to indicate the following drive models:
The specification summaries listed in the following tables are for quick reference. For details on specification measurement or definition,
refer to the appropriate section of this manual.
Table 1 Drive Specifications Summary
ST500LT012
DRIVE SPECIFICATION
Formatted capacity
Guaranteed sectors 976,773,168 625,142,448 488,397,168
Heads 2 1
Disks 1
Bytes per sector 512 (logical) / 4096 (physical)
Recording density 1958 Kb/in
Track density 360 Ktracks/in avg
Areal density 705 Gb/in2 avg
Spindle speed 5400 RPM
Sustained data transfer rate OD 100 MB/s max
I/O data-transfer rate 300 MB/s max
ATA data-transfer modes supported
(1)
ST500LT015
ST500LT025
500 GB 320 GB 250 GB
PIO modes 0–4
Multiword DMA modes 0–2
Ultra DMA modes 0–6
ST320LT012
ST320LT015
ST320LT025
ST250LT012
ST250LT015
ST250LT025
Cache buffer 16 MB
Height 6.8 +/- 0.2 mm (0.268 +/-.008 in)
Width 69.85 +/- 0.25 mm (2.750 +/- 0.010 in)
Length 100.35 +0.20 / -0.25 mm (3.951 +0.008 / -0.010 in)
Weight (typical) 95 g (0.209 lb)
Average latency 5.6 ms
Startup current (typical) 5V (peak) 1.0 A
Voltage tolerance (including noise) 5V ± 5%
Operating temperature 0° to 60°C
Nonoperating temperature (Ambient) –40° to 70°C
Temperature gradient (max)
Relative humidity
Relative humidity gradient 30% per hour max
20°C per hour max (operating)
35°C per hour max (nonoperating)
5% to 95% (operating)
5% to 95% (nonoperating)
MOMENTUS THIN SATA PRODUCT MANUAL, REV. G 4
Table 1 Drive Specifications Summary (continued)
DRIVE SPECIFICATIONS
DRIVE SPECIFICATION
Wet bulb temperature (max)
ST500LT012
ST500LT015
ST500LT025
37.7°C max (operating)
40.0°C max (nonoperating)
ST320LT012
ST320LT015
ST320LT025
Altitude, operating –304.8 m to 3048 m (–1000 ft to 10,000+ ft)
Altitude, nonoperating
(below mean sea level, max)
–304.8 m to 12,192 m (–1000 ft to 40,000+ ft)
Operational Shock 400 Gs at 2 ms max
Non-Operational Shock 1000 Gs at 1 ms max
Vibration, operating
5–200 Hz: 2.0 Gs
201–500 Hz: 1.0 Gs
Vibration, nonoperating 5–500 Hz: 5.0 Gs
Nonrecoverable read errors 1 per 10
14
bits read
To determine the warranty for a specific drive, use a web browser to access the following
web page: http://www.seagate.com/support/warranty-and-replacements/
Warranty
From this page, click on the “Verify Your Warranty” link. You will be asked to provide the
drive serial number, model number (or part number) and country of purchase. The system
will display the warranty information for your drive.
ST250LT012
ST250LT015
ST250LT025
Load-unload cycles 600,000 at 25°C, 50% rel. humidity
Supports Hotplug operation per the
Serial ATA Revision 2.6 specification
1. One GB equals one billion bytes when referring to hard drive capacity. Accessible capacity may vary depending on operating environment and
formatting.
Yes
2.1 FORMATTED CAPACITY
MODEL
500GB model
FORMATTED CAPACITY
500 GB 976,773,168
(1)
320GB model
250GB model
1. One GB equals one billion bytes when referring to hard drive capacity. Accessible capacity may vary depending on operating environment and
formatting.
250 GB 488,397,168
2.1.1 LBA mode
When addressing these drives in LBA mode, all blocks (sectors) are consecutively numbered from 0 to n–1, where n is the number of
guaranteed sectors as defined above.
Refer to Configuring and Mounting the Drive on page 15 (words 60-61 and 100-103) for additional information about 48-bit addressing
support of drives with capacities over 137 GB.
GUARANTEED SECTORS BYTES PER SECTOR
512 (logical) / 4096 (physical)320 GB 625,142,448
MOMENTUS THIN SATA PRODUCT MANUAL, REV. G 5
DRIVE SPECIFICATIONS
2.2 PHYSICAL ORGANIZATION
Drive model Read/write heads Number of discs
ST500LT012, ST500LT015 and ST500LT025
ST250LT012, ST250LT015 and ST250LT025 1
2
1ST320LT012, ST320LT015 and ST320LT025
2.3 RECORDING AND INTERFACE TECHNOLOGY
Interface Serial ATA (SATA)
Recording method Perpendicular
Recording density 1958 Kb/in
Track density 360 ktracks/in avg
Areal density 705 Gb/in2 avg
Spindle speed 5400 RPM +/- 0.2%
Sustained data transfer rate 100 MB/s max
I/O data-transfer rate 300 MB/s max
2.4 PHYSICAL CHARACTERISTICS
Height 6.8 +/- 0.2 mm (0.370 +/-.008 in)
Width 69.85 +/- 0.25 mm (2.750 +/- 0.010 in)
All models
Length 100.35 +0.20 / -0.25 mm (3.951 +0.008 / -0.010 in)
Typical weight 95 g (0.209 lb)
Cache buffer 16 MB (16,192 KB)
2.5 SEEK TIME
Seek measurements are taken with nominal power at 25°C ambient temperature. All times are measured using drive diagnostics. The
specifications in the table below are defined as follows:
Track-to-track seek time is an average of all possible single-track seeks in both directions.
Average seek time is a true statistical random average of at least 5000 measurements of seeks between random tracks, less overhead.
Table 2 Typical seek times
Typical seek times (ms) Read
Track-to-track 1.5
Average 12.0
Average latency 5.6
These drives are designed to consistently meet the seek times represented in this manual. Physical
seeks, regardless of mode (such as track-to-track and average), are expected to meet the noted
NOTE
values. However, due to the manner in which these drives are formatted, benchmark tests that
include command overhead or measure logical seeks may produce results that vary from these
specifications.
MOMENTUS THIN SATA PRODUCT MANUAL, REV. G 6
2.6 START/STOP TIMES
Table 3 Start/stop times
DRIVE SPECIFICATIONS
Typical seek times (ms) Typical
Max @ 25
°C
Power-on to ready (sec) 3.0 3.5
Power-on to ready (sec) (SED models) 3.5 4.0
Standby to ready (sec) 2.5 3.0
2.7 POWER SPECIFICATIONS
The drive receives DC power (+5V) through a native SATA power connector (refer to Figure 2).
2.7.1 Power consumption
Power requirements for the drives are listed in the table in
tested, under nominal conditions, at 25°C ambient temperature. These power measurements are done with Interface Power
Management modes like HIPM and DIPM enabled.
Spinup power
Spinup power is measured from the time of power-on to the time that the drive spindle reaches operating speed.
Seek mode
During seek mode, the read/write actuator arm moves toward a specific position on the disk surface and does not execute a read or
write operation. Servo electronics are active. Seek mode power is measured based on three random seek operations every 100 ms. This
mode is not typical.
Read/write power and current
Read/write power is measured with the heads on track, based on three 63 sector read or write operations every 100 ms.
Table 4. Typical power measurements are based on an average of drives
Idle mode power
Idle mode power is measured with the drive up to speed, with servo electronics active and with the heads in a random track location.
Standby mode
During standby mode, the drive accepts commands, but the drive is not spinning, and the servo and read/write electronics are in
power-down mode.
MOMENTUS THIN SATA PRODUCT MANUAL, REV. G 7
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