IBM DTTA-351010 Hard Drive Specifications - Page 25

Physical Format

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5.0 Physical Format Media defects are remapped to the next available sector during Format Process in manufacturing. The mapping from LBA to the physical locations is calculated by an internal maintained table. 5.1 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 spare tracks of inner zone. N N+1 N+2 N+3 Defect Defect A A Skip Skip Defects are skipped without any constraint, such as track or cylinder boundary. The calculation from LBA to physical is done automatically by internal table. | Note: There is possibility to reallocate sectors during drive usage including early period. It is mainly caused | by handling problem, and the reallocation is normal maintenance work of Hard Disk Drive. © Copyright IBM Corp. 1998 17

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5.0
Physical Format
Media defects are remapped to the next available sector during Format Process in manufacturing.
The
mapping from LBA to the physical locations is calculated by an internal maintained table.
5.1
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 spare tracks of inner zone.
N
N+1
N+2
N+3
Defect
Defect
A
A
Skip
Skip
Defects are skipped without any constraint, such as track or cylinder boundary.
The calculation from LBA to physical
is done automatically by internal table.
|
Note:
There is possibility to reallocate sectors during drive usage including early period.
It is mainly caused
|
by handling problem, and the reallocation is normal maintenance work of Hard Disk Drive.
Copyright IBM Corp. 1998
17