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Single-Host System with Primary Disk Drive Missing
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Figure 29 shows a single-host system that has just been switched on. The system
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contains a RAID-1 array whose primary disk drive is missing. The array remains online,
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but in the Exposed state until one of the following occurs:
v The missing primary disk drive becomes available again before a write operation to
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the array occurs. Under this condition, the restored disk drive is returned as the array
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primary disk drive, and the array returns to the Good state.
v A write operation to the array occurs before the missing primary disk drive becomes
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available again. Under this condition:
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– If a hot spare disk drive is available, that hot spare disk drive automatically
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– If, after the write operation occurs, no hot spare disk drive is available, the array
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Figure 29. Single-Host System with Primary Disk Drive Missing
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User's Guide and Maintenance Information
becomes the new primary disk drive, and the array goes into the Rebuilding state.
If the missing primary disk drive then becomes available again, it is rejected.
enters the Degraded state. If the missing primary disk drive then becomes
available again, it is rejected.
System 1
SSA Adapter
Primary 1
Secondary 1
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