8 Pipeline HD.2 Series SATA Product Manual, Rev. A
2.2 Formatted capacity
*One Gbyte equals one billion bytes when referring to hard drive capacity. Accessible capacity may vary depending on operating environment
and formatting.
2.2.1 LBA mode
When addressing the drive 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.
2.3 Default logical geometry
LBA mode
When addressing the drive 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
Model
Formatted
capacity*
Guaranteed
sectors
Bytes per sector
ST31000424CS
ST31000322CS
1000 Gbytes 1,953,525,168
512ST3500414CS
ST3500312CS
500 Gbytes 976,773,168
ST3250312CS 250 Gbytes 488,397,168
Cylinders Read/write heads Sectors per track
16,383 16 63
1000, 500 and 250 GB models
Interface Serial ATA (SATA)
Recording method Perpendicular
Recording density (kbits/inch max) 1417 kbits/in max
Track density (ktracks/inch avg) 236 ktracks/in avg
Areal density (Gbits/inch2 avg) 341.5 Gbits/in2 avg
Spindle speed (RPM) 5,900 +/- 0.2%
Internal data transfer rate (Mbits/sec max) 1285 Mbits/sec max
Sustained data transfer rate (Mbytes/sec max) 120 Mbytes/sec max
I/O data-transfer rate (Mbytes/sec max) 300 (Mbytes/sec max)