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Transition
The Transition feature enables you to specify ―permanent‖ spare drives for your
ASUS Storage subsystem. Transition is the process of replacing a revertible
spare drive that is currently part of a disk array with an unconfigured physical
drive or a non-revertible spare. The revertible spare drive returns to its original
status.
Transition happens automatically when the following sequence of events takes
place:
•
You create a revertible spare drive.
See page 172 (ASUS Storage Management) or page 236 (CLU).
•
A physical drive assigned to your disk array fails and the array goes critical
or degraded.
•
ASUS Storage automatically rebuilds your array to the revertible spare drive
and the array becomes functional again.
•
You replace the failed physical drive with a new physical drive of equal or
greater capacity.
•
ASUS Storage automatically transitions (moves) the data from the revertible
spare to the new physical drive.
•
The new physical drive becomes part of the array and the revertible spare
drive returns to its original spare status.
Transition happens manually when you specify a different unconfigured physical
drive to transition (move) the data from the revertible spare drive.
See the example below.
ASUS Storage supports disk drive hot-swapping. To avoid hand
contact with an electrical hazard, do not remove more than one
drive carrier a time.
Chapter 9: Technology Background
Caution
352
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