8 DiamondMax 22 Serial ATA Product Manual, Rev. A
2.1 Formatted capacity *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 48-
bit addressing support of drives with capacities over 137 Gbytes.
2.2 Default logical geometry 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 technologyModel Formatted
capacity*
Guaranteed
sectors Bytes per sector
STM31000334AS 1000 Gbytes 1,953,525,168 512
STM3320614AS 320 Gbytes 625,142,448 512
STM3160813AS 160 Gbytes 312,581,808 512
Cylinders Read/write heads Sectors per track
16,383 16 63
1000 GB Model 320 and 160 GB Models
Interface Serial ATA (SATA)
Recording method Perpendicular
Recording density (kbits/inch max) 1300 1250
Track density (ktracks/inch avg) 182 182
Areal density (Gbits/inch2 avg) 228 219
Spindle speed (RPM) 7,200 ± 0.2%
Internal data transfer rate (Mbits/sec max) 1520 1460
Sustained data transfer rate (Mbytes/sec max) 120 115
I/O data-transfer rate (Mbytes/sec max) 300