Meridian Data Excel / Meridian Data Computer Drive 1 Manuel D’Utilisation
102
E
XCEL
M
ERIDIAN
D
ATA
Following is an example to explain the Transition function.
In the example above, there is a four-drive RAID 5 disk array and a global spare drive. Physical drives 1, 2, 3,
and 4 belong to the disk array. Physical drive 5 remains unconfigured. Physical drive 6 is a revertible spare drive.
and 4 belong to the disk array. Physical drive 5 remains unconfigured. Physical drive 6 is a revertible spare drive.
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.
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.
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.
designated as a spare, therefore the controller cannot use it as a spare.