Promise Technology 2-Year Extended Warranty for VessR2000 RAID Head - Manual (Page 611)

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Vess R2000 Series Product Manual Promise Technologies
If a physical drive fails in a disk array and there is a spare drive of adequate capacity available, the controller
automatically rebuilds the array using the spare drive. In this example, physical drive 3 failed and the array is
rebuilt using physical drive 6, the revertible spare drive.
When the rebuild is complete, the spare drive has replaced the failed drive. In this example, failed drive 3 was
replaced by spare drive 6. The disk array now consists of physical drives 1, 2, 4, and 6.
There is no spare drive at this moment. Even if physical drive 5 is of adequate capacity, it has not been
designated as a spare, therefore the controller cannot use it as a spare.
1
2
3
4
5
6
Array
Drives