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U Series CE 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
ST380020ACE, ST360010ACE, ST340810ACE and the
ST320410ACE.
1.1 Formatted capacity
1.1.1 Default logical geometry
LBA Mode
When addressing drive in LBA mode, all blocks (sectors) are consecu-
tively 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
ST380020ACE 80 156,301,488 512
ST360020ACE 60 117,231,408 512
ST340810ACE 40 78,165,360 512
ST320410ACE 20 39,102,336 512
CHS Mode Cylinders Read/Write
heads
Sectors per
track
ST380020ACE 16,383 16 63
ST360020ACE 16,383 16 63
ST340810ACE 16,383 16 63
ST320410ACE 16,383 16 63