Seagate ST950814A, ST980829A, ST960812A, ST9402112A Drive specifications, Specification summary

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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 indicate ST9120824A, ST9100825A, ST980829A, ST960812A, ST950814A, ST9402112A, and ST930218A model drives.

2.1Specification summary

The specifications listed in this table are for quick reference. For details on specification measurement or definition, see the appropriate section of this manual.

Table 1:	Specifications for 120, 100, and 80 GB models

Drive specification		ST9120824A	ST9100825A	ST980829A

Formatted Gbytes (512 bytes/sector)*		120	100	80

Guaranteed sectors		234,441,648	195,371,568	156,301,488

Bytes per sector		512

Physical read/write heads		4	4	3

Discs		2	2	2

Cache (Mbytes)		8

Recording density, BPI (bits/inch typical)		778k

Track density. TPI (tracks/inch typical		126k

Areal density (Gbits/inch2 max)		98.2
Spindle speed (RPM)		4,200 RPM-class performance (actual spin speed: 5,400 RPM)

Internal data transfer rate OD (Mbytes/sec max)		37

I/O data-transfer rate (Mbytes/sec max)		100

ATA data-transfer modes supported		PIO modes 0–4; Multiword DMA modes 0–2; Ultra DMA modes 0–5

Height		9.5 +/–0.2 mm (0.374 +/–.008 inches)

Width		69.85 +/–0.25 mm (2.750 +/–0.010 inches)

Length		100.2 +/–0.25 mm (3.945 +/–0.010 inches)

Weight (typical)		100 grams (0.22 lb)

Average latency (msec)		5.6

Power-on to ready (sec typical)		3.5

Standby to ready (sec typical)		3.0

Startup current 5V (typical)		1.0 amps

Track-to-track seek time (msec typical)		1.0 (read), 1.5 (write)

Average seek time (msec typical)		12.5

Average seek, read (msec typical)		12.5

Average seek, write (msec typical)		14.5

Full-stroke seek (msec)		22 (typical); 24 (max)

Seek power (typical)		2.00 watts

Momentus 4200.2 Product Manual, Rev. C

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Contents Momentus Page Contents Momentus 4200.2 Product Manual, Rev. C List of Figures Momentus 4200.2 Product Manual, Rev. C Momentus 4200.2 Pata disc drive IntroductionMomentus 4200.2 Product Manual, Rev. C Specification summary Drive specificationsSpecifications for 120, 100, and 80 GB models Drive specification ST9120824A ST9100825A ST980829AFollowing web Warranty Drive specification ST960812A ST950814A ST9402112A ST930218A Specifications for 60, 50, 40, and 30 GB modelsSpecifications for 60, 50, 40, and 30 GB models LBA mode Default logical geometryFormatted capacity Physical organizationTechnology Specification Physical characteristicsRecording and interface technology Seek timeTime to ready Power specificationsTypical current profile Conducted noiseVoltage tolerance Power management modes Power-management modesActive mode Idle modeEnvironmental specifications Operating shock ShockNonoperating shock VibrationElectromagnetic immunity AcousticsDrive level acoustics Electromagnetic immunityMeasurement type Specification Safety certificationReliability Agency certificationKorean RRL Australian C-Tick N176FCC verification Environmental protection Corrosive environmentEuropean Union Restriction of Hazardous Substances RoHS Momentus 4200.2 Product Manual, Rev. C Handling and static discharge precautions Configuring and mounting the driveJumper settings Master/slave configurationCable-select option Drive mounting Mounting dimensions-top, side and end viewMomentus 4200.2 Product Manual, Rev. C Connector signals ATA interface signals and connector pinsConnector Cable Signal Name Contact Conductor Cable Connector Conductor Contact Signal NameSupported ATA commands Supported commandsCommand name Command code in hex ATA-standard commands Command name Command code in hex ATA-standard power-management commandsATA-standard security commands Word Description Value Identify Device commandXxxxH Bit Word Description if bit is set to Bit WordFeatures register values Set Features commandMomentus 4200.2 Product Manual, Rev. C Compatibility summary Installation considerationsTested systems System CompatibilityBios versions tested Tested Bios versionsVendor Release Revision Operating system versions tested Compatibility test configurationsSoftware utilities Other certificationInternet Seagate Technology support servicesPresales Support Technical SupportWarranty Service Data Recovery Services Authorized Service CentersData Recovery Services Call Center Toll-free Direct dial Index Page Page Momentus 4200.2 Product Manual, Rev. C Page Seagate Technology LLC