Seagate ST3250318AS, ST31000528AS manual Formatted capacity, Default logical geometry, LBA mode

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2.1Formatted capacity

	Model	Formatted	Guaranteed	Bytes per sector
	Model	capacity*	sectors	Bytes per sector
		capacity*	sectors

	ST31000528AS	1000 Gbytes	1,953,525,168

	ST3750528AS	750 Gbytes	1,465,149,168

	ST3500418AS	500 Gbytes	976,773,168
	ST3500410AS	500 Gbytes	976,773,168	512
	ST3500410AS

	ST3320418AS	320 Gbytes	625,142,448

	ST3250318AS	250 Gbytes	488,397,168

	ST3160318AS	160 Gbytes	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.

2.1.1LBA mode

When addressing these drives 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.

See 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 137 Gbytes.

2.2Default logical geometry

Cylinders	Read/write heads	Sectors per track

16,383	16	63

LBA mode

When addressing these drives 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.

10	Barracuda 7200.12 Serial ATA Product Manual, Rev. B

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Contents Barracuda 7200.12 Serial ATA Revision history Revision Date Sheets affected or commentsContents Barracuda 7200.12 Serial ATA Product Manual, Rev. B List of Figures Page Introduction About the Serial ATA interface Drive specifications Drive specifications summary for 1000 and 750 Gbyte models Will display the warranty information for your drive Drive specifications summary for 500 Gbyte models Tem will display the warranty information for your drive Drive specifications summary for 250 Gbyte models Will display the warranty information for your drive Default logical geometry LBA modeFormatted capacity Cylinders Read/write heads Sectors per track 16,383Physical characteristics Recording and interface technologySeek time Start/stop timesTypical seek times msec Read Write 750 GB models 500, 320, 250 and 160 GB modelsPower specifications Power-management modes Active modeIdle mode Sleep modeEnvironmental specifications Shock Operating shockNonoperating shock 750 GB models 500, 320, 250 and 160 GB modelsAcoustics Electromagnetic immunityFluid Dynamic Bearing FDB motor acoustics Test for Prominent Discrete Tones PDTsSafety certification ReliabilityAgency certification Electromagnetic compatibilityAustralian C-Tick N176 Korean RRLFCC verification Environmental protection Corrosive environmentConfiguring and mounting the drive Handling and static-discharge precautionsConfiguring the drive Serial ATA cables and connectorsMounting dimensions 1000 and 750 GB models Drive mountingMounting dimensions 500, 320, 250 and 160 GB 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 WordShall be cleared to 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 Presales Support Seagate Technology support servicesTechnical Support Data Recovery Services Authorized Service Centers Warranty ServiceData Recovery Services Call Center Toll-free Direct dial Index ITE Page Barracuda 7200.12 Serial ATA Product Manual, Rev. B Page Seagate Technology LLC