Seagate 7200.8 PATA, ST3250623A, ST3300631A Formatted capacity, Default logical geometry, LBA mode

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2.2Formatted capacity

	Formatted	Guaranteed
Model	capacity	sectors	Bytes per sector

ST3400832A	400 Gbytes	781,422,768	512

ST3400632A	400 Gbytes	781,422,768	512

ST3300831A	300 Gbytes	586,072,368	512

ST3300631A	300 Gbytes	586,072,368	512

ST3250823A	250 Gbytes	488,397,168	512

ST3250623A	250 Gbytes	488,397,168	512

ST3200826A	200 Gbytes	390,721,968	512

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 4.1.2, "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

2.4	Recording and interface technology

Interface		ATA

Recording method		16/17 EPRML

Recording density BPI (bits/inch max)		728,000

Track density TPI (tracks/inch avg)		120,000

Areal density (Mbits/inch2 avg)		91,560
Spindle speed (RPM) (± 0.2%)		7,200

Internal data-transfer rate (Mbytes/sec max)		95

Sustained data transfer rate OD (Mbytes/sec max)		65.0

I/O data-transfer rate (Mbytes/sec max)		100 (Ultra DMA mode 5)

Interleave		1:1

Cache buffer
ST3400832A, ST3300831A, ST3250823A and ST3200826A		8 Mbytes (8,192 kbytes)

ST3400632A, ST3300631A, and ST3250623A		16 Mbytes (16,384 kbytes)

10	Barracuda 7200.8 PATA Product Manual, Rev. F

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Contents Barracuda 7200.8 Pata Page Contents Barracuda 7200.8 Pata Product Manual, Rev. F List of Figures Barracuda 7200.8 Pata Product Manual, Rev. F Introduction Barracuda 7200.8 PataBarracuda 7200.8 Pata Product Manual, Rev. F Drive specifications Specification summary tableDrive specifications for 400 Gbyte models Drive specification ST3400832A ST3400632ABarracuda 7200.8 Pata Product Manual, Rev. F Drive specifications for 300 Gbyte models Drive specification ST3300831A ST3300631AFollowing web Drive specifications for 250 and 200 Gbyte models Drive specification ST3250823A ST3250623A ST3200826ABarracuda 7200.8 Pata Product Manual, Rev. F Default logical geometry LBA modeFormatted capacity Recording and interface technologySeek time Physical characteristicsStart/stop times Power specifications Conducted noise Typical current profileVoltage tolerance Power-management modes Active modeIdle mode Sleep modeEnvironmental specifications Shock Operating shockNonoperating shock VibrationAcoustics Electromagnetic immunityFluid Dynamic Bearing FDB motor acoustics Radio frequency environmentsSafety certification ReliabilityAgency certification Electromagnetic compatibilityAustralian C-Tick N176 FCC verificationCorrosive environment Environmental protectionEuropean Union Restriction of Hazardous Substances RoHS Configuring and mounting the drive Handling and static discharge precautionsBreather filter hole precautions Breather filter hole locationJumper settings Master/slave configurationDrive as master with a non-ATA-compatible slave Cable-select optionDrive mounting Ultra ATA/100 cableMounting dimensions-top, side and end view Barracuda 7200.8 Pata Product Manual, Rev. F ATA interface signals and connector pins ATA interfaceSupported ATA commands Command name Command code in hexF4H Identify Device command Word Description ValueXx07H Description if bit is set to Bit Word Set Features command 4 S.M.A.R.T. commandsCode in features Register A.R.T. command Seagate Technology support services InternetPresales Support Technical SupportData Recovery Services Authorized Service Centers Warranty ServiceData Recovery Services Call Center Toll-free Direct dial Index Page TMR Barracuda 7200.8 Pata Product Manual, Rev. F Page Seagate Technology LLC