Raid-5 Array State Flowchart - IBM Advanced SerialRAID Adapters SA33-3285-02 User Manual

Advanced serialraid adapters
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RAID-5 Array State Flowchart

Original disk
replaced
N
Write operation
New disk
Array Degraded
Figure 15. RAID-5 Array State Flowchart
Array Good
Disk
Disk fails
is removed
Disk rejected
Array Exposed
Second
Y
disk fails or
is removed
N
Array Offline
Y
Array
N
enabled for
Hot Spare
Y
N
Hot Spare
available
Allow
Y
Write while
Exposed
Hot Spare
swapped in
Write Op
rejected
Array
Rebuilding
Y
N
Array Degraded
(no protection)
Chapter 3. RAID Functions and Array States
35

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