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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