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CYLINDER 2
1 98 1 DID 1 100 1 D 11011. ••
1192119311941
4 Defects;
3 Spares
CYLINDER 3
119511961
D
11971 • • • • • • • 129212931
S
I
1 Defect;
3 Spares;
1 Overflow
Note:
In this example cylinder 2 now contains
97
sectors
and Cylinder 3 contains
99,
the remaining cylinders
on the disk contain
98.
Figure
6-8.
Sector Sparing and Overflow Sectors
In the case of formatting out a grown defect(s) within a cylinder
with no available spares,
all
subsequent cylinders must be
reformatted until an adequate number of spares are available to
account for all overflowing sectors.
6.·4.2
FORMAT UNIT DATA
Two format options exist, one using the standard SCSI defect list
for formatting an entire disk drive, the other using an Adaptec
defect list for reformatting a single cylinder.
Figures
6-9
and
6-10
detail the data required for entire drive
and cylinder level formatting.
500504-00
6-14
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