Seagate ST3500630NS Product Manual - Page 20

2.2 Formatted capacity Model ST3750640NS ST3750840NS ST3500630NS ST3500830NS ST3400620NS ST3400820NS ST3320620NS ST3320820NS ST3250620NS ST3250820NS Formatted capacity* 750 Gbytes 750 Gbytes 500 Gbytes 500 Gbytes 400 Gbytes 400 Gbytes 320 Gbytes 320 Gbytes 250 Gbytes 250 Gbytes Guaranteed sectors 1,465,149,168 1,465,149,168 976,773,168 976,773,168 781,422,768 781,422,768 625,142,448 625,142,448 488,397,168 488,397,168 Bytes per sector 512 512 512 512 512 512 512 512 512 512 *One Gbyte equals one billion bytes when referring to hard drive capacity. Accessible capacity may vary depending on operating environment and formatting. 2.2.1 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. 14 Barracuda ES Serial ATA Product Manual, Rev. B