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8 Constellation Serial ATA Product Manual, Rev. D
3.2 Formatted capacity
Model
Formatted
capacity*
Guaranteed
sectors
Bytes per sector
ST9500530NS 500 Gbytes 976,773,168
512
ST9160511NS 160 Gbytes 312,581,808
*One Gbyte equals one billion bytes when referring to hard drive capacity. Accessible capacity may vary depending on operating environment
and formatting.
3.2.1 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 5.3.1, "Identify Device command" (words 60-61 and 100-103) for additional information about 48-
bit addressing support of drives with capacities over 137 Gbytes.
3.3 Default logical geometry
Cylinders Read/write heads Sectors per track
16,383 16 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.
3.4 Recording and interface technology
500GB 160GB
Interface Serial ATA (SATA)
Recording method Perpendicular
Recording density, KBPI (kbit
s/inch max) 1410
Track density, KTPI (ktracks/inch avg) 200
Areal density (Gbits/inch
2
avg) 283
Spindle speed (RPM) (± 0.2%) 7200
Internal data transfer rate (Mbits/sec max) 1136
Sustained data transfer rate (Mbytes/sec max) 95
I/O data-transfer rate (Mbytes/sec max) 300 (Ultra DMA mode 5)