Seagate ST91000642SS Constellation SATA Product Manual - Page 14

Formatted capacity, Default logical geometry, Recording and interface technology

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3.2 Formatted capacity Model ST9500530NS ST9160511NS Formatted capacity* 500 Gbytes 160 Gbytes Guaranteed sectors 976,773,168 312,581,808 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. 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 48bit addressing support of drives with capacities over 137 Gbytes. 3.3 Default logical geometry Cylinders 16,383 Read/write heads 16 Sectors per track 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 Interface Recording method Recording density, KBPI (kbits/inch max) Track density, KTPI (ktracks/inch avg) Areal density (Gbits/inch2 avg) Spindle speed (RPM) (± 0.2%) Internal data transfer rate (Mbits/sec max) Sustained data transfer rate (Mbytes/sec max) I/O data-transfer rate (Mbytes/sec max) 500GB 160GB Serial ATA (SATA) Perpendicular 1410 200 283 7200 1136 95 300 (Ultra DMA mode 5) 8 Constellation Serial ATA Product Manual, Rev. D

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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 (kbits/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)