Barracuda ATA IV Family Product Manual, Rev. B 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
ST380021A, ST360021A, ST340016A and the ST320011A.
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
.
Drive model Formatted Gbytes
Guaranteed
sectors
Bytes per
sector
ST380021A 80.0 156,301,488 512
ST360021A 60.0 117,231,408 512
ST340016A 40.0 78,165,360 512
ST320011A 20.0 39,102,336 512
CHS mode Cylinders Read/write heads
Sectors per
track
ST380021A 16,383 16 63
ST360021A 16,383 16 63
ST340016A 16,383 16 63
ST320011A 16,383 16 63
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