Seagate ST1000DM003 Barracuda 7200.11 SATA Product Manual - Page 16
Formatted capacity, Default logical geometry, Recording and interface technology
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2.1 Formatted capacity Model ST31000340AS ST31000640AS ST3750330AS ST3750630AS ST3640330AS ST3640630AS ST3500320AS ST3500620AS ST3500820AS Formatted capacity* 1000 Gbytes 750 Gbytes 640 Gbytes 500 Gbytes Guaranteed sectors 1,953,525,168 1,465,149,168 1,250,284,896 976,773,168 Bytes per sector 512 512 512 512 *One Gbyte equals one billion bytes when referring to hard drive capacity. Accessible capacity may vary depending on operating environment and formatting. 2.1.1 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. See Section 4.3.1, "Identify Device command" (words 60-61 and 100-103) for additional information about 48bit addressing support of drives with capacities over 137 Gbytes. 2.2 Default logical geometry Cylinders 16,383 Read/write heads 16 Sectors per track 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. 2.3 Recording and interface technology Interface Recording method Recording density (kbits/inch max) Track density (ktracks/inch avg) Areal density (Gbits/inch2 avg) Spindle speed (RPM) Internal data transfer rate (Mbits/sec max) Sustained data transfer rate (Mbytes/sec max) I/O data-transfer rate (Mbytes/sec max) Serial ATA (SATA) Perpendicular 1090 150 164 7,200 ± 0.2% 1287 105 300 10 Barracuda 7200.11 Serial ATA Product Manual, Rev. G