Seagate ST500LM021 User Manual
Laptop Thin HDD
7200 RPM SATA Product Manual
Standard models
ST500LM021
ST320LM010
100737930, Rev. G
Gen 3.0 - October 2016
Self-Encryption models
ST500LM023
SED FIPS 140-2 models
ST500LM024
Document Revision History
Revision Date Pages affected and Description of changes
Rev. A 11/20/2013 Initial release.
Rev. B 01/03/2014 3 & 6.
Rev. C 05/08/2014 4, 11, 13-14, 16 & 25.
Rev. D 06/11/2014 fc, 2, 9, 15 & 17.
Rev. E 10/21/2014 fc, 6-7, 8-9, 15-16, 21-23 & 27-29.
Rev. F 04/28/2016
8 & 15: Updated Warranty link text to “Is my Drive under Warranty”
16: Updated Section 2.12 Agency Certification
16: Updated to Electromagnetic Compatibility Directive 2014/30/EU
Rev. G 10/14/2016
16: Added MSIP Korean text for Class B device warning
18: Updated to China RoHS 2
a
© 2016 Seagate Technology LLC. All rights reserved.
Publication number: 100737930, Rev. G October 2016
Seagate, Seagate Technology and the Wave logo are registered trademarks of Seagate Technology LLC in the United States and/or other countries. Momentus 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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.0 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
1.1 About the Serial ATA Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.0 Drive Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.1 Formatted Capacity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
2.1.1 LBA mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.2 Physical organization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.3 Recording and Interface Technology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
2.4 Physical Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.5 Seek time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
2.6 Start/stop times . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
2.7 Power Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
2.7.1 Power consumption . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
2.7.2 Conducted noise. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
2.7.3 Voltage tolerance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
2.7.4 Power management modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
2.8 Environmental Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
2.8.1 Shock. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
2.8.2 Vibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
2.9 Acoustics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
2.9.1 Test for prominent discrete tones (PDTs). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
2.10 Electromagnetic Immunity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
2.11 Reliability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
2.12 Agency Certification. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
2.12.1 Safety certification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
2.12.2 Electromagnetic Compatibility (EMC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
2.12.3 FCC verification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
2.13 Environmental Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
2.13.1 European Union Restriction of Hazardous Substances (RoHS) Directive . . . . . . . . . . . . . .17
2.13.2 China Requirements — China RoHS 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
2.14 Corrosive Environment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
Seagate Laptop Thin HDD Product Manual, Rev. G 2
Contents
3.0 Configuring and Mounting the Drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
3.1 Handling and Static-Discharge Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
3.2 Configuring the Drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
3.2.1 Serial ATA Cables and Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
3.3 Drive Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
4.0 About FIPS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
5.0 About (SED) Self-Encrypting Drives. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
5.1 Data Encryption . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
5.2 Controlled Access . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
5.2.1 Admin SP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
5.2.2 Locking SP. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
5.2.3 Default password . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
5.2.4 ATA Enhanced Security . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
5.3 Random Number Generator (RNG) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
5.4 Drive Locking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
5.5 Data Bands. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
5.6 Cryptographic Erase . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
5.7 Authenticated Firmware Download . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
5.8 Power Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
5.9 Supported Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
5.10 RevertSP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
6.0 Serial ATA (SATA) Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
6.1 Hot-Plug Compatibility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24
6.2 Serial ATA Device Plug Connector Pin Definitions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24
6.3 Supported ATA Commands. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
6.3.1 Identify Device command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27
6.3.2 Set Features command. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31
6.3.3 S.M.A.R.T. commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32
Seagate Laptop Thin HDD Product Manual, Rev. G 3
Figures
Figure 1 Typical 5V Startup and Operation Current Profile . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Figure 2 Attaching SATA Cabling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Figure 3 Mounting Dimensions (for standard models) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Figure 4 Example of FIPS tamper evidence labels. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Seagate Laptop Thin HDD Product Manual, Rev. G 4
Seagate® Technology Support Services
For information regarding online support and services, visit: http://www.seagate.com/contacts/
For information regarding Warranty Support, visit: http://www.seagate.com/support/warranty-and-replacements/
For information regarding data recovery services, visit: http://www.seagate.com/services-software/data-recovery-services/
For Seagate OEM, Distribution partner and reseller portals, visit: http://www.seagate.com/partners/
Seagate Laptop Thin HDD Product Manual, Rev. G 5
1.0 Introduction
This manual describes the functional, mechanical and interface specifications for the following Seagate® Laptop Thin HDD model drives:
Standard models Self-Encryption models SED FIPS 140-2 models
ST500LM021 - 1KJ152 ST500LM023 - 1RR152 ST500LM024 - 1RS152
ST320LM010 - 1KJ15C
Previous generations of Seagate Self-Encrypting Drive models were called
Note
For more information on SED drives see About (SED) Self-Encrypting Drives on page 22.
For more information on FIPS 140-2 Level 2 certification see About FIPS on page 21.
These drives provide the following key features:
• 1000 Gs nonoperating shock and 400 Gs of operating shock.
• 16MB buffer.
• 5400-RPM spindle speed.
• Full-track multiple-sector transfer capability without local processor intervention.
• High instantaneous (burst) data-transfer rates (up to 6Gb/s).
• Native Command Queuing (NCQ) with command ordering.
• Perpendicular recording technology.
• Quiet operation. Fluid Dynamic Bearing (FDB) motor.
• SeaTools™ diagnostic software performs a drive self-test that eliminates unnecessary drive returns.
• State-of-the-art cache and on-the-fly error-correction algorithms.
• Support for Read Multiple and Write Multiple commands.
• Support for S.M.A.R.T. drive monitoring and reporting.
• The 3D Defense System™, which includes Drive Defense, Data Defense and Diagnostic Defense,
offers the industry’s most comprehensive protection for disk drives.
• Worldwide Name (WWN) capability uniquely identifies the drive.
Full Disk Encryption (FDE) models before a differentiation between drivebased encryption and other forms of encryption was necessary.
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 users to
install a Serial ATA host adapter and Serial ATA disk drive in the current system and expect all of the 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
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.
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 3.2). The specification can be downloaded from www.serialata.or
separate Serial ATA ports are represented to host software as a Device 0 (master) and 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.
g.
Seagate Laptop Thin HDD Product Manual, Rev. G 6
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
Drive Specification ST500LM021, ST500LM023 & ST500LM024 ST320LM010
Formatted capacity
Guaranteed sectors 976,773,168 625,142,448
Heads 2
Disks 1
Bytes per sector 512 (logical) / 4096 (physical)
Recording density 1875 Kb/in
Track density 375 Ktracks/in avg
Areal density 670 Gb/in
Spindle speed 7200 RPM
Sustained data transfer rate OD 135 MB/s max
(1)
500 GB 320 GB
2
avg
I/O data-transfer rate 600 MB/s max
ATA data-transfer modes supported PIO modes 0–4
Cache buffer 32 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 4.2ms
Startup current (typical) 5V (peak) 1.0 A
Voltage tolerance (including noise) 5V ± 5%
Operating temperature 0° to 60°C
Nonoperating temperature
(Ambient)
Temperature gradient (max) 20°C per hour max (operating)
Relative humidity 5% to 95% (operating)
Multiword DMA modes 0–2
Ultra DMA modes 0–6
–40° to 70°C
35°C per hour max (nonoperating)
5% to 95% (nonoperating)
Relative humidity gradient 30% per hour max
Wet bulb temperature (max) 37.7°C max (operating)
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)
40.0°C max (nonoperating)
Seagate Laptop Thin HDD Product Manual, Rev. G 7
Table 1 Drive Specifications Summary (continued)
Drive Specification ST500LM021, ST500LM023 & ST500LM024 ST320LM010
Operational Shock 400 Gs at 2 ms max
Non-Operational Shock 1000 Gs at 1 ms max
Drive Specifications
Vibration, operating 5–200 Hz: 2.0 Gs
Vibration, nonoperating 5–500 Hz: 5.0 Gs
Nonrecoverable read errors 1 per 10
Rated workload Average rate of <55TB/year. The MTBF specification for the drive assumes the I/O workload does
not exceed the average annualized workload rate limit of 55TB/year. Workloads exceeding the
annualized rate may degrade the drive MTBF and impact product reliability. The average annual-
ized workload rate limit is in units of TB per year, or TB per 8760 power-on hours. Workload rate
limit = TB transferred × (8760/recorded power-on hours).
Warranty 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/.
From this page, click on the “Is my Drive 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.
Load-unload cycles 600,000 at 25°C, 50% rel. humidity
Supports Hotplug operation per the
Serial ATA Revision 3.2 specification
1. One GB equals one billion bytes when referring to hard drive capacity. Accessible capacity may vary depending on operating environment and formatting.
201–500 Hz: 1.0 Gs
14
bits read
Ye s
2.1 Formatted Capacity
Model
Formatted Capacity
(1)
Guaranteed Sectors Bytes per Sector
500GB model
500 GB 976,773,168
512 (logical) / 4096 (physical)
320GB model
1. One GB equals one billion bytes when referring to hard drive capacity. Accessible capacity may vary depending on operating environment and formatting.
320 GB 625,142,448
Seagate Laptop Thin HDD Product Manual, Rev. G 8
Drive Specifications
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 19 (words 60-61 and 100-103) for additional information about 48-bit addressing support
of drives with capacities over 137 GB.
2.2 Physical organization
Drive model Read/write heads Number of discs
ST500LM021, ST500LM023
& ST500LM024
ST320LM010
2 1
2.3 Recording and Interface Technology
Interface Serial ATA (SATA)
Recording method Perpendicular
Recording density 1875 Kb/in
Track density 375 ktracks/in avg
Areal density 670 Gb/in2 avg
Spindle speed 7200 RPM +/- 0.2%
Sustained data transfer rate 135 MB/s max
I/O data-transfer rate 600 MB/s max
2.4 Physical Characteristics
Height 6.8 +/- 0.2 mm (0.268 +/-.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 32 MB (32,384 KB)
Seagate Laptop Thin HDD Product Manual, Rev. G 9
Drive Specifications
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 -trac k 1.5
Average 11.0
Average latency 4.2
These drives are designed to consistently meet the seek times represented in this manual. Physical seeks,
Note
regardless of mode (such as track-to-track and average), are expected to meet the noted 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.
2.6 Start/stop times
Table 3 Start/stop times
Typical seek times (ms) Ty pic al
Max @ 25°C
Power-on to ready (sec) 3.5 4.0
Standby to ready (sec) 3.0 3.5
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 Tab le 4 . Typical power measurements are based on an average of drives 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.
• 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.
Seagate Laptop Thin HDD Product Manual, Rev. G 10
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