Seagate STM3320820A DiamondMax 21 PATA Product Manual - Page 16

2.2 Formatted capacity Model STM3320820A STM3300620A STM3250620A STM3250820A STM3200820A STM3160215A STM380215A Formatted capacity* 320 Gbytes 300 Gbytes 250 Gbytes 200 Gbytes 160 Gbytes 80 Gbytes Guaranteed sectors 625,142,448 586,072,368 488,397,168 390,721,968 312,581,808 156,301,488 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 4.1.2, "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 10 DiamondMax 21 PATA Product Manual, Rev. B