Hitachi 7K250 - Deskstar - Hard Drive Specifications page 28

Table 3: Cylinder allocation
26 1,546
27 1,500
28 1,000
29 1,056
Physical cylinder is calculated from the starting data track of 0. It is not relevant to logical CHS. Depending on the
capacity some of the inner zone cylinders are not allocated.
Data cylinder
This cylinder contains the user data which can be sent and retrieved via read/write commands and a spare area for
reassigned data.
Spare cylinder
The spare cylinder is used by Hitachi Global Storage Technologies manufacturing and includes data sent from a
defect location.
2,157 2,285
1,700 1,748
1,570 1,700
1,521 2,100
Deskstar 7K250 Hard Disk Drive Specification
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607
594
567
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