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RAID User’s Manual
Under RAID 0+1, the array maintains data integrity if any 1 or 2 combination survives.
Event
1
2
3
4
5
6
Failed Drives
A1/A2
B2/B1
A1/B2
B1/A2
A1/B1
B2/A2
Array Status
Working
Working A1/A2
Working B1/A2
Working A1/B2
Offline
Offline
Why?
B1/B2 retain array integrity
retain array integrity
retain array integrity
retain array integrity
B2/A2 contain only half of the array data
A1/B1 contain only half of the array data
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