Seagate, Seagate Technology and the Wave logo are registered trademarks of Seagate Technology LLC
in the United States and/or other countries. Momentus, SeaTools and SeaTDD are either trademarks or
registered trademarks of Seagate Technology LLC or one of its affiliated companies in the United States
and/or other countries. All other trademarks or registered trademarks are the property of their respective
owners.
One gigabyte, or GB, equals one billion bytes when referring to hard drive capacity. Accessible capacity
may vary depending on operating environment and formatting. Quantitative usage examples for various
applications are for illustrative purposes. Actual quantities will vary based on various factors, including file
size, file format, features and application software. Seagate reserves the right to change, without notice,
product offerings or specifications.
• High instantaneous (burst) data-transfer rates (up to 150 Mbytes per second).
• Perpendicular recording technology provides the drives with increased areal density.
• State-of-the-art SDRAM buffer and on-the-fly error-correction algorithms.
• Full-track multiple-sector transfer capability without local processor intervention.
• 900 Gs nonoperating shock and 350 Gs of operating shock.
• SeaTools diagnostic software performs a drive self-test that eliminates unnecessary drive returns.
• The 3D Defense System ™, which includes Drive Defense, Data Defen se and Diagnostic Defense, offers the
industry’s most comprehensive protection for disc drives.
• Support for S.M.A.R.T. drive monitoring and reporting.
• Support for Read Multiple and Write Multiple commands.
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Momentus 5400.3 PSD SATA Product Manual, Rev. A
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 normally 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 pa rallel ATA easy by providing legacy softwar e suppo rt. Seri al
ATA was designed to allow you to install a Serial ATA host adapter and Serial ATA disc drive in your current
system and expect all of your existing applications to work as normal.
The Serial ATA interface connects each disc 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.
Note.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
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 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 ada pter cont ains a set of registe rs that sha dow the conte nt s of the trad i tional devi ce r egisters, 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: High Speed Serialized
AT Attachment” specification. The specification can be downloaded from http://www.serialata.org.
1.2Non-volatile cache (NVC)
Momentus 5400.3 PSD SATA include a non-volatile cache feature. For a user to see the benefits of NVC, the
host operating system must support the “Non-volatile cache” commands (B6h) and associated subcommands
as specified in the ATA-8 specification. See Section 4.3 for the list of commands supported by Momentus
5400.3 PSD SATA drives (including the Non-volatile cache commands).
Non-volatile cache is designed to:
• Improve performance
• Provide power savings and battery life (in notebook systems)
• Improve reliability
• Reduce acoustic noise in some read/write operations
Improve performance
The non-volatile cache (NVC) improves performance by writing and reading to the non-volatile cache rather
than waiting for the rotating media to complete spinning-up from sleep, standby, and hibernate modes. Performance improvements may also be seen from minimizing disc seeks and enabling more I/Os per second. The
non-volatile cache also improves cold boot performance when used with operating systems designed to take
advantage of this cache.
Momentus 5400.3 PSD SATA Product Manual, Rev. A
3
Provide power savings and battery life
NVC decreases power consumption by reducing the amount of time the discs are spinning in the HDA.
Improve reliability
Shock and vibration impacts during writes is negligible when writing to NVC memory. This results in an overall
Annualized Failure Rate (AFR) of less than 0.50%.
Reduced acoustics
Reads and writes from NVC memory may occur without the acoustic impact of spinning media and actuator
movement.
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Momentus 5400.3 PSD SATA Product Manual, Rev. A
Momentus 5400.3 PSD SATA Product Manual, Rev. A
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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 refer to the
various models.
2.1Specification summary table
The specifications listed in this table are for quick reference. For details on specification measurement or definition, see the appropriate section of this manual.
Full-stroke seek (msec)22 (typical); 24 (max)
Startup current, +5V (typical)1.0 amps
Seek power (typical)2.0 watts
Read/write power (typical)Read: 1.9 watts; Write: 1.8 watts
Idle mode, low power (typical)0.6 watts
Standby mode0.2 watts (typical)***
Sleep mode0.2 watts (typical)***
Voltage tolerance (including noise)+5V ± 5%
Ambient temperature 0° to 60°C (operating), –40° to 70°C (nonoperating)
Temperature gradient (°C per hour max)20°C (operating)
Relative humidity5% to 90% (operating)
Relative humidity gradient30% per hour max
Wet bulb temperature (°C max)30 (operating)
Altitude, operating–304.8 m to 3,048 m (–1000 ft to 10,000+ ft)
Altitude, nonoperating
(meters below mean sea level, max)
Shock, operating (Gs max at 2 msec)350
Shock, nonoperating (Gs max at 2 msec)800
Shock, nonoperating (Gs max at 1 msec)900
Shock, nonoperating (Gs max at 0.5 msec)400
Vibration, operating1.0 G (0 to peak, 5–500 Hz)
Vibration, nonoperating5 Gs (0 to peak, 5–500 Hz)
Drive acoustics, sound power (bels)
Idle**2.4 (typical)
Supports Hotplug operation per Serial ATA
Revision 2.5 specification
30°C (nonoperating)
5% to 95% (nonoperating)
40 (nonoperating)
–304.8 m to 12,192 m (–1000 ft to 40,000+ ft)
2.6 (max)
3.2 (max)
14
bits read
600,000 software-controlled power on/off cycles
20,000 hard power on/off cycles
600,000 software-controlled power on/off cycles
20,000 hard power on/off cycles
To determine the warranty for a specific drive, use a web browser to access the following web page:
www.seagate.com/support/service/
From this page, click on the “Verify Your Warranty” link. You will be a sked 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.
Yes (requires COMPRESET from host after a hotplug event)
2.2 (typical)
2.4 (max)
2.9 (typical)
3.1 (max)
*One Gbyte equals one billion bytes when referring to hard drive capacity. Accessible capacity may vary depending on operating environment
and formatting.
Momentus 5400.3 PSD SATA Product Manual, Rev. A
7
**During period s of driv e idle, some offline activi ty may oc cu r according to the S.M.A.R.T. s pe cif icati on, whi ch ma y in crease acoustic and
power to operational levels.
***Typical notebooks will pull power to th e drive when ente ring S3 and S4; while in the S3 and S4 states, dr ive sleep and drive standby
modes will not contribute to battery power consumption.
2.2Formatted ca pacity
ModelFormatted capacity*Guaranteed sectors Bytes per sector
*One Gbyte equals one billion bytes when referring to hard drive capacity. Accessible capacity may vary depending on operating environm ent
and formatting.
2.2.1LBA 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.
See Section 4.3.1, "Identify Device command" (words 60-61 and 100-103) for additional information about 48bit addressing support of drives with capacities over 137 Gbytes.
2.3Default logical geometry
CylindersRead/write headsSectors per track
16,3831663
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