Fujitsu MBA3073NC Product Manual - Page 38

Spare area in cell, Alternate cylinder

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The number of spare sectors per cell is fixed at 300. This number cannot be changed by users. Track 0 Sector 0 1 Track 1 Cell n n+1 n-m-1 n-m 2n-m-1 2n-m n-2 n-1 2n-2 2n-1 Last track SPR1 SPR299 SPR300 Spare sectors (300 sectors) Note: This HDD manages alternate spare areas for each cell, which is a set of cylinders. One cell consists of 32 to 40 cylinders. Figure 3.2 Spare area in cell The alternate cylinder is used for replacement action via the REASSIGN BLOCKS command or automatic replacement processing. The alternate cylinder is allocated to 10 cylinders at the end of the last zone in the user space. The user space and the system space share the alternate cylinders. Note: The number of alternate cylinders cannot be changed. Figure 3.3 Alternate cylinder 34 Downloaded from www.Manualslib.com manuals search engine C141-E270

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The number of spare sectors per cell is fixed at 300.
This number cannot be changed by users.
Track 0
Sector 0
1
n-m-1
n-m
n-2
n-1
Track 1
n
n+1
2n-m-1
2n-m
2n-2
2n-1
Last track
SPR1
SPR299
SPR300
Cell
Spare sectors (300 sectors)
Note:
This HDD manages alternate spare areas for each cell, which is a set of cylinders.
One
cell consists of 32 to 40 cylinders.
Figure 3.2
Spare area in cell
The alternate cylinder is used for replacement action via the REASSIGN BLOCKS command or
automatic replacement processing. The alternate cylinder is allocated to 10 cylinders at the end of
the last zone in the user space.
The user space and the system space share the alternate cylinders.
Note:
The number of alternate cylinders cannot be changed.
Figure 3.3
Alternate cylinder
34
C141-E270
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