Promise Technology VTrack M-Class M500p Manual descargar pdf (Pagina 261)

Chapter 7: Technology Background

253

drive. In this example, physical drive 3 failed and the array is rebuilt using

physical drive 6, the 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.

At this juncture, you would replace the failed drive in slot 3 with a new one.

If you wanted to make the new drive in slot 3 a member of the disk array and

return the drive in slot 6 to spare drive status, you would use the Transition

function.

Transition copies the data from the spare drive that became part of the array to

the target drive you specify.

In this example, you would select the disk array and specify physical drive 3 as

the target. Transition copies the data from drive 6 to drive 3. Then drive 3

becomes part of the disk array while drive 6 returns to spare drive status.

When Transition is finished, physical drives 1, 2, 3 and 4 belong to the disk array

and physical drive 6 is a revertible spare drive. The original configuration is

restored.

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Promise Technology VTrack M-Class M500p Manual Pagina 261