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Momentus 5400.3 SATA Product Manual, Rev. C
iii
Revision status summary sheet
RevisionDateNotes
Rev. A04/17/06All.
Rev. B06/01/06Pages 3, 4, 6, 8, and 9.
Rev. C02/23/07Pages 4 and 7.
• 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 cache 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™, w hich in clu des Drive Defense , D at a Defen se and D iagnost ic 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.
2
Momentus 5400.3 SATA Product Manual, Rev. C
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 AT A makes the transi tio n from pa rall el AT A eas y by providing le gacy sof twar e suppo rt. S erial
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 i n 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 Devi ce 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 environmen t 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 contains a set of registers that shadow the contents of the tradi tional devi ce r egisters, referred to as the Shadow Register Block. All Serial ATA devices behave like Device 0 devices. For additional informati on 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.
Momentus 5400.3 SATA Product Manual, Rev. C
3
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
ST9160821AS, ST9120822AS, ST9100828AS, ST980811AS, ST960813AS, and ST940814AS 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.
Guaranteed sectors312,581,808234,441,648195,371,568156,301,488117,210,24078,340,160
Bytes per sector512
Physical read/write heads433221
Discs222111
Cache (Mbytes)8
Recording density in BPI
(bits/inch max)
Track density TPI (tracks/inch max) 150k
Areal density (Gbits/inch2 max)132
Spindle speed (RPM)5,400
Internal transfer rate
(Mbits/sec max)
I/O data transfer rate
(Mbytes/sec max)
ATA data-transfer modes supported SATA 1.0, Serial AT A Revision 2.5
Height (max)9.5 +/- 0.2 mm (0.374 +/- .0078 inches)
Width (max)69.85 mm (2.75 +/- 0.0098 inches)
Length (max)100.50 +/- 0.25 mm (3.957 +/- 0.010 inches)
Weight (typical)100 grams (0.22 lb)96 grams (0.21 lb)
Average latency (msec)5.6
Power-on to ready (sec typical)3.0
Standby to ready (sec typical)3.0
Track-to-track seek time
Supports Hotplug operation per
Serial AT A Revision 2.5 specification
*One Gbyte equals one billion bytes when referring to hard drive capacity. Accessible capacity may vary depending on operating environment
and formatting.
**During period s of driv e idle, some offline acti vi ty may occ u r accor di ng to th e S. M.A.R .T. spe c ifica tion, w hich may increase 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.
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 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.
Yes (requires COMPRESET from host after a hotplug event)
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 envir onment
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 geom etry
CylindersRead/write headsSectors per track
16,3831663
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.
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