Defect Flagging Strategy; Figure 1 Plist Physical Format - Hitachi HDS723020BLA642 Specifications

Defect flagging strategy

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Media defects are remapped to the next available sector during the Format Process in manufacturing. The mapping
from LBA to the physical locations is calculated by an internally maintained table.
Shipped format
Data areas are optimally used.
No extra sector is wasted as a spare throughout user data areas.
All pushes generated by defects are absorbed by the spare tracks of the inner zone.
Defects are skipped without any constraint, such as track or cylinder boundary. The calculation from
LBA to physical is done automatically by internal table.
N N+1
defect
skip

Figure 1 PList physical format

N+2 N+3
defect
skip
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