Seagate 7200.8 PATA ユーザーズマニュアル
10
Barracuda 7200.8 PATA Product Manual, Rev. F
2.2
Formatted capacity
2.2.1
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.
where n is the number of guaranteed sectors as defined above.
See Section 4.1.2, "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.
2.3
Default logical geometry
2.4
Recording and interface technology
Model
Formatted
capacity
capacity
Guaranteed
sectors Bytes
sectors Bytes
per
sector
ST3400832A
400 Gbytes
781,422,768
512
ST3400632A
400 Gbytes
781,422,768
512
ST3300831A
300 Gbytes
586,072,368
512
ST3300631A
300 Gbytes
586,072,368
512
ST3250823A
250 Gbytes
488,397,168
512
ST3250623A
250 Gbytes
488,397,168
512
ST3200826A
200 Gbytes
390,721,968
512
Cylinders
Read/write heads
Sectors per track
16,383
16
63
Interface
ATA
Recording method
16/17 EPRML
Recording density BPI (bits/inch max)
728,000
Track density TPI (tracks/inch avg)
120,000
Areal density (Mbits/inch
2
avg)
91,560
Spindle speed (RPM) (± 0.2%)
7,200
Internal data-transfer rate (Mbytes/sec max)
95
Sustained data transfer rate OD (Mbytes/sec max)
65.0
I/O data-transfer rate (Mbytes/sec max)
100 (Ultra DMA mode 5)
Interleave
1:1
Cache buffer
ST3400832A, ST3300831A, ST3250823A and ST3200826A
8 Mbytes (8,192 kbytes)
ST3400632A, ST3300631A, and ST3250623A
16 Mbytes (16,384 kbytes)