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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
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and use outside of the U.S. Seagate reserves the right to change, without notice, product offerings or specifications.
SEAGATE LAPTOP THIN SSHD SATA PRODUCT MANUAL, REV. DIV
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Seagate Laptop Thin SSHD SATA Product Manual, Rev. D 1
1.0INTRODUCTION
This manual describes the functional, mechanical and interface specifications for the following Seagate Seagate® Laptop
Thin SSHD model drives:
Standard modelsStandard SED modelsSED (FIPS 140-2) models
ST500LM000ST500LM001ST500LM020
ST320LM002
Previous generations of Seagate Self-Encrypting Drive models were called Full Disk Encryption
NOTE
NOTE
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.
64MB buffer.
8GB NAND flash
Quiet operation. Fluid Dynamic Bearing (FDB) motor.
High instantaneous (burst) data-transfer rates (up to 6Gb/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 350 Gs of operating shock.
SeaTools
The 3D Defense System™, which includes Drive Defense, Data Defense and Diagnostic Defense,
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.
(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
“Security of Data at Rest” based on the standards defined by the Trusted Computing Group (see
www.trustedcomputinggroup.org).
TM
diagnostic software performs a drive self-test that eliminates unnecessary drive returns.
Seagate Laptop Thin SSHD 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.
SEAGATE LAPTOP THIN SSHD SATA PRODUCT MANUAL, REV. D 2
1.1ABOUT 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.
SEAGATE LAPTOP THIN SSHD SATA PRODUCT MANUAL, REV. D 3
DRIVE SPECIFICATIONS
2.0DRIVE 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
Formatted capacity
(1)
ST500LM000, ST500LM001
AND ST500LM020
ST320LM002
500 GB320 GB
Guaranteed sectors976,773,168625,142,448
Heads2
Disks1
Bytes per sector512 (logical) / 4096 (physical)
Recording density1894 Kb/in
Track density375 Ktracks/in avg
Areal density705 Gb/in2 avg
Spindle speed5400 RPM
Sustained data transfer rate OD100 MB/s max
I/O data-transfer rate600 MB/s max
PIO modes 0–4
ATA data-transfer modes supported
Multiword DMA modes 0–2
Ultra DMA modes 0–6
Cache buffer64MB
NAND flash
Commercial Multilevel Cell (cMLC)
8GB
Height6.8 +/- 0.2 mm (0.268 +/-.008 in)
Width69.85 +/- 0.25 mm (2.750 +/- 0.010 in)
Length100.35 +0.20 / -0.25 mm (3.951 +0.008 / -0.010 in)
Weight (typical)95 g (0.209 lb)
Average latency5.6 ms
Startup current (typical) 5V (peak)1.0 A
Voltage tolerance (including noise)5V ± 5%
Operating temperature0° to 60°C
Nonoperating temperature (Ambient)–40° to 70°C
Temperature gradient (max)
Relative humidity
20°C per hour max (operating)
35°C per hour max (nonoperating)
5% to 95% (operating)
5% to 95% (nonoperating)
Relative humidity gradient30% per hour max
SEAGATE LAPTOP THIN SSHD SATA PRODUCT MANUAL, REV. D 4
Table 1 Drive Specifications Summary (continued)
DRIVE SPECIFICATIONS
DRIVE SPECIFICATION
Wet bulb temperature (max)
ST500LM000, ST500LM001
AND ST500LM020
37.7°C max (operating)
40.0°C max (nonoperating)
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 Shock350 Gs at 2 ms max
Non-Operational Shock1000 Gs at 1 ms max
Vibration, operating
5–200 Hz: 2.0 Gs
201–500 Hz: 1.0 Gs
Vibration, nonoperating5–500 Hz: 5.0 Gs
Nonrecoverable read errors1 per 1015 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.
ST320LM002
Load-unload cycles600,000 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
2.1FORMATTED CAPACITY
MODEL
500GB model
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.
FORMATTED CAPACITY
500 GB976,773,168
320 GB625,142,448
(1)
2.1.1LBA 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 Configu ring a nd Mo unti ng th e Driv e 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)
2.2PHYSICAL ORGANIZATION
Drive modelRead/write headsNumber of discs
ST500LM000, ST500LM001
and ST500LM020
ST320LM002
21
SEAGATE LAPTOP THIN SSHD SATA PRODUCT MANUAL, REV. D 5
2.3RECORDING AND INTERFACE TECHNOLOGY
InterfaceSerial ATA (SATA)
Recording methodPerpendicular
Recording density 1894 Kb/in
Track density 375 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 600 MB/s max
2.4PHYSICAL CHARACTERISTICS
Height6.8 +/- 0.2 mm (0.370 +/-.008 in)
DRIVE SPECIFICATIONS
Width69.85 +/- 0.25 mm (2.750 +/- 0.010 in)
All models
Length100.35 +0.20 / -0.25 mm (3.951 +0.008 / -0.010 in)
Typical weight95 g (0.209 lb)
Cache buffer64MB (65,536 KB)
2.5SEEK 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-track2.0
Average12.0
Average latency5.6
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.
SEAGATE LAPTOP THIN SSHD SATA PRODUCT MANUAL, REV. D 6
2.6START/STOP TIMES
Table 3 Start/stop times
DRIVE SPECIFICATIONS
Typical seek times (ms)Typical
Max @ 25
°C
Power-on to ready (sec)<1.0<1.0
Power-on to ready (sec) (SED models)TBDTBD
Standby to ready (sec)<1.0<1.0
2.7POWER SPECIFICATIONS
The drive receives DC power (+5V) through a native SATA power connector (refer to Figure 2).
2.7.1Power consumption
Power requirements for the drives are listed in the table in
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.
Table 4. Typical power measurements are based on an average
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 SSHD SATA PRODUCT MANUAL, REV. D 7
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