Seagate ST98823AS Physical organization, Recording and interface technology, Drive specification

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2.4Physical organization

Drive model	Read/write heads	Number of discs

ST9120821AS	4	2

ST9100824AS	4	2

ST98823AS	3	2

ST96812AS	2	1

ST94813AS	2	1

ST93811AS	1	1

2.5Recording and interface technology

Interface	Serial ATA (SATA)

Recording method	16/17 EPRML

Recording density BPI (bits/inch max)	778k

Track density TPI (tracks/inch max)	126k

Areal density (Mbits/inch2 max)	98.2
Spindle speed (RPM) (± 0.2%)	5,400

Maximum Internal transfer rate (Mbytes/sec)	42

I/O data-transfer rate (Mbytes/sec max)	150 (SATA 1.0)

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)	100.5	+/-1.6
	(inches)	3.945	+/-0.0098

Typical weight	(grams)	100
	(pounds)	0.22

6	Momentus 5400.2 SATA Product Manual, Rev. C

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Contents Momentus 5400.2 Sata Page Contents Momentus 5400.2 Sata Product Manual, Rev. C List of Figures Page Introduction Momentus 5400.2 Sata disc driveAbout the Serial ATA interface Drive specifications Specification summary tableWarranty information for your drive Default logical geometry LBA modeFormatted capacity Cylinders Read/write heads Sectors per track 16,383Physical characteristics Drive specificationPhysical organization Recording and interface technologySeek time Start/stop timesTypical seek times Typical seek times msec Read WritePower specifications Deferred spinup Additional detailsPower-management modes Power management modesActive mode Idle modeEnvironmental specifications Shock Operating shockNonoperating shock VibrationAcoustics Electromagnetic immunityDrive level acoustics Radio frequency environmentsSafety certification Measurement type SpecificationReliability Agency certificationKorean RRL Australian C-Tick N176FCC verification Environmental protection Corrosive environmentEuropean Union Restriction of Hazardous Substances RoHS 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 5400.2 Sata Product Manual, Rev. C Serial ATA connector pin definitions SignalSerial ATA Sata interface 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 5400.2 Sata Product Manual, Rev. C Identify Device command Word Description ValueXx07H Description if bit is set to Bit Word Bit WordSet Features command Set Features command values3 S.M.A.R.T. commands A.R.T. commandsCode in features register A.R.T. command Seagate Technology support services InternetPresales Support Technical SupportWarranty Service Data Recovery Services Authorized Service CentersData Recovery Services Call Center Toll-free Direct dial Index ITE Sata Momentus 5400.2 Sata Product Manual, Rev. C Page Seagate Technology LLC