Formatted Capacity; Lba Mode; Default Logical Geometry; Recording And Interface Technology - Seagate ST3400832A - Barracuda 400 GB Hard Drive Product Manual

2.2

Formatted capacity

Formatted
Model capacity
ST3400832A 400 Gbytes
ST3400632A 400 Gbytes
ST3300831A 300 Gbytes
ST3300631A 300 Gbytes
ST3250823A 250 Gbytes
ST3250623A 250 Gbytes
ST3200826A 200 Gbytes
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.
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.
2.3

Default logical geometry

Cylinders Read/write heads
16,383
2.4

Recording and interface technology

Interface
Recording method
Recording density BPI (bits/inch max)
Track density TPI (tracks/inch avg)
2
Areal density (Mbits/inch
Spindle speed (RPM) (± 0.2%)
Internal data-transfer rate (Mbytes/sec max)
Sustained data transfer rate OD (Mbytes/sec max)
I/O data-transfer rate (Mbytes/sec max)
Interleave
Cache buffer
ST3400832A, ST3300831A, ST3250823A and ST3200826A
ST3400632A, ST3300631A, and ST3250623A
10
Guaranteed
sectors
781,422,768
781,422,768
586,072,368
586,072,368
488,397,168
488,397,168
390,721,968
16
avg)
Bytes per sector
512
512
512
512
512
512
512
Sectors per track
63
ATA
16/17 EPRML
728,000
120,000
91,560
7,200
95
65.0
100 (Ultra DMA mode 5)
1:1
8 Mbytes (8,192 kbytes)
16 Mbytes (16,384 kbytes)
Barracuda 7200.8 PATA Product Manual, Rev. D