0 drive specifications – Seagate ULTRA ATA ST320423A User Manual
Page 13
U10 Family Product Manual, Rev. A
5
1.0 Drive specifications
Unless otherwise noted, all specifications are measured under ambient
conditions, at 25°C, and nominal power. For convenience, the phrases
the drive and this drive are used throughout this manual to indicate the
ST320423A, ST315323A and the ST310212A.
1.1 Formatted capacity
1.1.1 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
.
1.2 Physical organization
Drive Model
Guaranteed Mbytes
(1 Mbyte = 10
6
bytes)
Guaranteed
sectors
Bytes per
sector
ST320423A
20,485
40,011,300
512
ST315323A
15,364
30,008,475
512
ST310212A
10,242
20,005,650
512
CHS Mode
Cylinders
Read/Write heads Sectors per track
ST320423A
16,383
16
63
ST315323A
16,383
16
63
ST310212A
16,383
16
63
Drive Model
Read/Write heads (GMR)
Number of discs
ST320423A
4
2
ST315323A
3
2
ST310212A
2
1