In-Line Sparing Of Defective Sectors; In-Line Sparing Overflow Of Defective Sectors - Quantum Q250 Technical Reference Manual

HEAD 0
HEAD 1
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•
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HEAD 5
HEAD 0
HEAD 1
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HEAD 5
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NEXT CYL
x
x +
32
x +
159
x +
1
x +
2
x +
29
(Bad)
x +
33
x +
60
XXXX
x +
160
x +
161
x +
188
x
=
logical block address of initial sector
Q280: cylinder number
x
190; Q250; cylinder
x
126
(Assuming 512 byte logical block size)
XXXXX
=
deallocated sector
x +
30
x +
61
x +
189
(spare)
Figure 4-3: In-Line Sparing of Defective Sectors
x
x +
32
x +
61
x +
157
x +
1
x +
2 x +
29
(Bad)
x +
33
(Bad)
XXXX
XXX X
x +
186
x
=
logical block address of initial sector
Q280: cylinder number
x
190; Q250; cylinder
x
126
(Assuming 512 byte logical block size)
XXXXX
=
deallocated sector
x +
30
x +
60
x
+
187
(spare)
(spare)
x +
31
x +
62
(spare)
x +
31
(Bad)
XXXX
x +
188
(spare)
x +
189
(spare)
Figure 4-4: In-Line Sparing Overflow of Defective Sectors
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