Seagate ST9250315ASG, ST9500325AS manual Physical organization, Recording and interface technology

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2.4Physical organization

Drive model	Read/write heads	Number of discs

ST9500325AS and ST9500325ASG	4	2

ST9320325AS and ST9320325ASG	3	2

ST9250315AS and ST9250315ASG	2	1

ST9160314AS and ST9160314ASG	2	1

ST9120315AS	1	1

2.5Recording and interface technology

Interface	Serial ATA (SATA)

Recording method	Perpendicular

Recording density BPI (bits/inch avg)	1,490k

Track density TPI (tracks/inch avg)	265k

Areal density (Gbits/inch2 avg)	394
Spindle speed (RPM) (± 0.2%)	5,400

Maximum Internal transfer rate (Mbits/sec)	1,175

I/O data-transfer rate (Mbytes/sec max)	300

Interleave	1:1

Cache buffer	8 Mbytes (8,192 kbytes)

2.6Physical characteristics

Drive specification

Height	(mm)	9.5 +/-0.2
	(inches)	0.374 +/-0.0078

Width	(mm)	69.85 +/-0.25
	(inches)	2.75 +/-0.0098

Length	(mm)	100.35 +0.55 / -0.25
	(inches)	3.957 +0.079 / -0.0098

Weight (max)
	ST9500325AS	98.8 grams
	ST9500325ASG	0.218 pounds
	ST9320325AS
	ST9320325ASG
	ST9250315AS	93.5 grams
	ST9250315ASG	0.206 pounds
	ST9160314AS
	ST9160314ASG
	ST9120315AS

6	Momentus 5400.6 SATA Product Manual, Rev. A

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Contents Momentus 5400.6 Sata Page Momentus 5400.6 Sata Product Manual, Rev. a Momentus 5400.6 Sata Product Manual, Rev. a Contents Momentus 5400.6 Sata Product Manual, Rev. a List of Figures Page Introduction About the Serial ATA interface Drive specifications Specification summary tableRead 2.6 watts Write 2.85 watts Formatted capacity Default logical geometryLBA mode Cylinders Read/write heads Sectors per track 16,383Physical organization Physical characteristicsDrive specification Recording and interface technologyTypical seek times Seek timeStart/stop times Seek times msec ReadPower specifications Conducted noise Typical current profileDeferred spinup Voltage toleranceActive mode Power-management modesPower management modes Idle modeEnvironmental specifications Nonoperating shock ShockOperating shock VibrationElectromagnetic immunity Drive A-weighted Sound Power Levels SWL, BAAcoustics Test for Prominent Discrete Tones PDTsReliability Free Fall Protection featureSafety certification Agency certificationFCC verification Korean RRLAustralian C-Tick N176 China Restriction of Hazardous Substances RoHS Directive Environmental protectionEuropean Union Restriction of Hazardous Substances RoHS Configuring and mounting the drive Handling and static-discharge precautionsConfiguring the drive Serial ATA cables and connectorsDrive mounting Top cover stiffness/deflectionMeasurements shown in are in inches Serial ATA Sata interface Serial ATA connector pin definitionsSignal Segment Pin Function DefinitionPin Function Definition P10 Ground 2nd mate P11 ReservedSupported ATA commands Command name Command code in hex ATA-standard commandsCommand name Command code in hex Momentus 5400.6 Sata Product Manual, Rev. a Identify Device command Word Description ValueXx7FH Description if bit is set to Bit Word Bit WordSet Features command Set Features command valuesAAH Code in features register A.R.T. command 3 S.M.A.R.T. commandsA.R.T. commands Momentus 5400.6 Sata Product Manual, Rev. a Technical Support Seagate Technology support servicesPresales Support Data Recovery Services Call Center Toll-free Direct dial Warranty ServiceData Recovery Services Authorized Service Centers Index ITE Sata Momentus 5400.6 Sata Product Manual, Rev. a Page Seagate Technology LLC

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