Promise Technology SuperTrack EX8658 Manuel d'utilisateur télécharger pdf (Page 273)

Chapter 7: Technology Background

259

The physical drive in channel 2 fails. The disk array becomes degraded and its

logical drives go critical. The SuperTrak controller automatically rebuilds the disk

array using the spare drive, the physical drive in channel 4.

As we saw in the example of Automatic Transition, if you replace the failed

physical drive in channel 2, the SuperTrak controller would transition the data

from the physical drive in channel 4 to the new drive in channel 2.

But if you wanted to use a different physical drive in your array, such as the

unassigned drive in channel 3, you would run the Transition function manually.

When the Manual Transition is finished:

• The physical drives in channels 1 and 3 belong to the disk array.

• The physical drive channel 2 is still failed and unusable.

• The physical drive in channel 4 is a revertible spare drive.

At this point, after running the Manual Transition, you would replace the failed

drive in channel 2. The replacement drive in channel 2 will remain unconfigured

until you assign it to a disk array or as a spare.

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Promise Technology SuperTrack EX8658 Manuel d'utilisateur Page 273