Seagate ST3400820SCE, ST3250820SCE manual Formatted capacity, Default logical geometry, LBA mode

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2.2Formatted capacity

	Formatted	Guaranteed
Model	capacity*	sectors	Bytes per sector

ST3750640SCE	750 Gbytes	1,465,149,168	512

ST3750840SCE	750 Gbytes	1,465,149,168	512

ST3500830SCE	500 Gbytes	976,773,168	512

ST3400820SCE	400 Gbytes	781,422,768	512

ST3320820SCE	320 Gbytes	625,142,448	512

ST3300820SCE	300 Gbytes	586,072,368	512

ST3250820SCE	250 Gbytes	488,397,168	512

*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 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.

2.3Default 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.

12	DB35.3 Series Serial ATA Product Manual, Rev. D

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Contents

DB35.3 Series Serial ATA Revision history Revision Date Sheets affected or commentsContents DB35.3 Series Serial ATA Product Manual, Rev. D List of Figures Page Introduction About the Serial ATA interface Drive specifications Specification summary tablesDrive specifications summary for 750 Gbyte models Drive specification ST3750640SCE ST3750840SCEDB35.3 Series Serial ATA Product Manual, Rev. D Drive specifications summary for 500 and 400 Gbyte models Drive specification ST3500830SCE ST3400820SCEFollowing web Drive specifications summary for 320 and 300 Gbyte models Drive specification ST3320820SCE ST3300820SCEDB35.3 Series Serial ATA Product Manual, Rev. D Drive specifications summary for 250 Gbyte models Drive specification ST3250820SCEInformation for your drive Formatted capacity Default logical geometryLBA mode Cylinders Read/write heads Sectors per track 16,383Recording and interface technology Physical characteristicsDrive specification 750GB 500GB 400GB 320GB 300GB 250GBPower specifications Seek timeStart/stop times Standby mode Operating power and currentIdle mode power DC power requirementsPower modes Heads Spindle Buffer Power-management modesActive mode Conducted noiseIdle mode Sleep modeIdle and Standby timers Environmental specifications Vibration Nonoperating shock Disc models4 Disc models Operating vibrationAcoustics Fluid Dynamic Bearing FDB motor acousticsIdle CE seek profile Electromagnetic immunity ReliabilityAgency certification Korean RRL Australian C-Tick N176FCC verification Environmental protection RoHS MCVPage Configuring and mounting the drive Handling and static-discharge precautionsConfiguring the drive Serial ATA cables and connectorsMounting dimensions-top, side and end view Drive mountingDB35.3 Series Serial ATA Product Manual, Rev. D Serial ATA Sata interface Hot-Plug compatibilitySignal Serial ATA device plug connector pin definitionsSerial ATA connector pin definitions Pin Function DefinitionSupported ATA commands Supported ATA commandsCommand name Command code in hex F4H Identify Device command Word Description ValueXx07H 159 160 ATA-reserved 0000H 254 255 Integrity word XxA5H Description if bit is set to Bit Word Bit WordSet Features command Set Features command values3 S.M.A.R.T. commands M.A.R.T. commandsCode in features register A.R.T. command Internet Presales SupportTechnical Support Warranty Service Data Recovery Services Authorized Service CentersData Recovery Services Call Center Toll-free Direct dial Index RRL Sata DB35.3 Series Serial ATA Product Manual, Rev. D Page Seagate Technology LLC