Seagate ST3750330NS Barracuda ES.2 SATA Product Manual - Page 14

2.2 Formatted capacity Model ST31000340NS ST3750330NS ST3500320NS ST3250310NS Formatted capacity* 1000 Gbytes 750 Gbytes 500 Gbytes 250 Gbytes Guaranteed sectors 1,953,525,168 1,465,149,168 976,773,168 488,397,168 Bytes per sector 512 *One Gbyte equals one billion bytes when referring to hard drive capacity. Accessible capacity may vary depending on operating environment and formatting. 2.2.1 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. 2.3 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. 2.4 Recording and interface technology Interface Recording method Recording density, KBPI (kbits/inch max) Track density, KTPI (ktracks/inch avg) Areal density (Gbits/inch2 avg) Spindle speed (RPM) (± 0.2%) Internal data transfer rate (Mbits/sec max) Sustained data transfer rate (Mbytes/sec max) I/O data-transfer rate (Mbytes/sec max) 1000GB 750GB Serial ATA (SATA) Perpendicular 1,090 150 164 7,200 1287 105 300 (Ultra DMA mode 5) 500GB 250GB 8 Barracuda ES.2 Serial ATA Product Manual, Rev. G