Seagate ST31000520AS ユーザーズマニュアル
6
Barracuda LP Series SATA 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.
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.
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.
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
ST32000542AS
2000 Gbytes
3,907,029,168
512
ST31500541AS
1500 Gbytes
2,930,277,168
ST31000520AS
1000 Gbytes
1,953,525,168
Cylinders
Read/write heads
Sectors per track
16,383
16
63
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/inch
2
avg)
341.5 Gbits/in
2
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)
95 Mbytes/sec max
I/O data-transfer rate (Mbytes/sec max)
300 (Mbytes/sec max)