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Seagate ST9160827AS, ST9250827AS manual Physical organization, Recording and interface technology

Models: ST9120817AS ST9160827AS ST9200827AS ST9250827AS

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2.4Physical organization

Drive model	Read/write heads	Number of discs

ST9250827AS	4	2

ST9200827AS	4	2

ST9160827AS	3	2

ST9120817AS	2	1

2.5Recording and interface technology

Interface	Serial ATA (SATA)

Recording method	Perpendicular

Recording density BPI (bits/inch max)	1,180k

Track density TPI (tracks/inch max)	173k

Areal density (Gbits/inch2 max)	204
Spindle speed (RPM) (± 0.2%)	5,400

Internal transfer rate (Mbits/sec, max)	778

Sustained transfer rate (Mbytes/sec, max)	58

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)	100.20 +/-0.25
	(inches)	3.945	+/-0.010

Typical weight
	ST9250827AS	102 grams
	ST9200827AS	0.23 pounds
	ST9160827AS
	ST9120817AS	97 grams
		0.21 pounds

6	Momentus 5400.4 SATA Product Manual, Rev. A

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Seagate ST9160827AS, ST9250827AS manual Physical organization, Recording and interface technology, Physical characteristics

Contents

Momentus 5400.4 Sata ST9250827AS ST9200827AS ST9160827AS ST9120817ASRevision Date Comments Revision historyRev. a 10/23/07 Initial release Momentus 5400.4 Sata Product Manual, Rev. a Momentus 5400.4 Sata Product Manual, Rev. a Contents Momentus 5400.4 Sata Product Manual, Rev. a List of Figures Page Introduction About the Serial ATA interface Drive specifications Specification summary tableSleep mode 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 Typical seek times msec Read WritePower specifications Conducted noise Typical current profileDeferred spinup Voltage toleranceActive mode Power-management modesPower management modes Idle modeEnvironmental specifications Nonoperating shock ShockOperating shock VibrationDrive level acoustics Acoustic emissionElectromagnetic immunity Test for Prominent Discrete Tones PDTsReliability Safety certificationMeasurement type Specification Agency certificationFCC verification Korean RRLAustralian C-Tick N176 European Union Restriction of Hazardous Substances RoHS Environmental protectionCorrosive environment Configuring and mounting the drive Handling and static-discharge precautionsConfiguring the drive Serial ATA cables and connectorsMounting dimensions-top, side and end view Drive mountingMomentus 5400.4 Sata Product Manual, Rev. a 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 ATA-standard security commandsMomentus 5400.4 Sata Product Manual, Rev. a Identify Device command Word Description ValueXx07H Description if bit is set to Bit Word Bit WordSet Features command Set Features command valuesCode in features register A.R.T. command 3 S.M.A.R.T. commandsA.R.T. commands Presales Support Seagate Technology support servicesInternet Technical SupportData Recovery Services Call Center Toll-free Direct dial Warranty ServiceData Recovery Services Authorized Service Centers Index ITE Sata Momentus 5400.4 Sata Product Manual, Rev. a Page Seagate Technology LLC