Seagate Hard Drive Specifications for ST31000322CS, ST3160316CS, ST3250412CS, ST3320311CS, and More

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2.2Formatted capacity

	Formatted	Guaranteed
Model	capacity*	sectors	Bytes per sector

ST31000424CS	1000GB	1,953,525,168
ST31000322CS
ST3500414CS	500GB	976,773,168
ST3500312CS
ST3320413CS	320GB	625,142,448	512
ST3320311CS
ST3250412CS	250GB	488,397,168
ST3250312CS
ST3160316CS	160GB	312,581,808

*One Gbyte equals one billion bytes when referring to hard drive capacity. Accessible capacity may vary depending on operating environment and formatting.

2.2.1LBA mode

When addressing the drive 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.

Refer to Section 4.3.1, "Identify Device command" (words 60-61 and 100-103) for additional information about 48-bit addressing support of drives with capacities over 137GB.

2.3Default logical geometry

Cylinders	Read/write heads	Sectors per track

16,383	16	63

2.4Recording and interface technology

	All models

Interface	Serial ATA (SATA)

Recording method	Perpendicular

Recording density (max.)	1417kb/in

Track density (ktracks/inch avg)	236 ktracks/in

Areal density (Gbits/inch2 avg)	341.5Gb/in2
Spindle speed (RPM)	5900 (+/- 0.2%)

Internal data transfer rate (Mb/s max.)	1285Mb/s

Sustained data transfer rate (MB/s max.)	120MB/s

I/O data-transfer rate (MB/s max.)	300MB/s

10	Video 3.5 HDD Product Manual, Rev. J

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Contents Video 3.5 HDD Revision history Revision Date Sheets affected or commentsPipeline HD.2 Series Sata Product Manual, Rev. J Pipeline HD.2 Series Sata Product Manual, Rev. J Contents Pipeline HD.2 Series Sata Product Manual, Rev. J Introduction About the Serial ATA interface Drive specifications Specification summary tablesDrive specifications summary for 1000GB models Drive specification ST31000424CS ST31000322CSVideo 3.5 HDD Product Manual, Rev. J Drive specifications summary for 500 and 320GB models Video 3.5 HDD Product Manual, Rev. J Drive specifications summary for 250 and 160GB models Drive specification ST3250412CS ST3250312CS ST3160316CSVideo 3.5 HDD Product Manual, Rev. J Default logical geometry LBA modeFormatted capacity Recording and interface technologySeek time Physical characteristicsStart/stop times Power specifications Conducted noise Typical current profilesVoltage tolerance Power management modes Active modeIdle mode Sleep modeEnvironmental specifications Shock Operating shockNon-operating shock VibrationDrive A-weighted Sound Power Levels SWL, BA Acoustics emissionsElectromagnetic immunity Test for Prominent Discrete Tones PDTsSafety certification ReliabilityAgency certification Annualized Failure Rate AFRAustralian C-Tick N176 Korean RRLFCC verification Corrosive environment Environmental protectionChina Restriction of Hazardous Substances RoHS Directive Configuring and mounting the drive Handling and static-discharge precautionsConfiguring the drive Serial ATA cables and connectorsMounting dimensions for 1000GB models Drive mountingMounting dimensions for 500, 320, 250 and 160GB models Serial ATA Sata interface Hot-Plug compatibilitySerial ATA device plug connector pin definitions Serial ATA connector pin definitionsSignal Pin Function DefinitionSupported ATA commands Supported ATA commandsCommand name Command code in hex F3H Identify Device command Word Description ValueXx07H Description if bit is set to Bit Word Bit WordIdle Immediate command with Iunload faeture is supported Set Features command Set Features command valuesM.A.R.T. commands 3 S.M.A.R.T. commandsCode in features register A.R.T. command Seagate Technology support services Data Recovery Services Authorized Service Centers Warranty ServiceData Recovery Services Call Center Toll-free Direct dial Index RRL Page Video 3.5 HDD Product Manual, Rev. J Page Seagate Technology LLC

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