Datasheet

10 DiamondMax 23 Serial ATA Product Manual, Rev. C
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 technology
Model
Formatted
capacity*
Guaranteed
sectors
Bytes per sector
STM31000528AS 1000 Gbytes 1,953,525,168
512
STM3750528AS 750 Gbytes 1,465,149,168
STM3500418AS 500 Gbytes 976,773,168
STM3320418AS 320 Gbytes 625,142,448
STM3250318AS 250 Gbytes 488,397,168
STM3160318AS 160 Gbytes 312,581,808
Cylinders Read/write heads Sectors per track
16,383 16 63
Interface Serial ATA (SATA)
Recording method Perpendicular
Recording density (kbits/inch max) 1413
Track density (ktracks/inch avg) 236
Areal density (Gbits/inch
2
avg) 329
Spindle speed (RPM) 7,200 ± 0.2%
Internal data transfer rate (Mbits/sec max) 1695
Sustained data transfer rate (Mbytes/sec max) 125
I/O data-transfer rate (Mbytes/sec max) 300