Running A Transition - G-Technology G SPEED STUDIO XL Product Manual

G SPEED
STUDIO
with Thunderbolt™
Requirements
The spare drive must have adequate capacity to replace the largest physical drive in your disk arrays.
Additionally, it must be the same media type as the physical drives in your disk arrays. A revertible spare
drive requires you to replace the failed physical drive in the disk array and run the Transition function.
Transition
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, whereupon the revertible spare drive will
return to its original status. To run the Transition function, the spare drive must be revertible.
In addition, you must specify an unconfigured physical drive of the same or larger capacity and the
same media type as the revertible spare drive.

Running a Transition

The Transition feature enables you to specify "permanent" spare drives for your G-SPEED Studio
XL unit. 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 will
return to its original status.
Transition happens automatically when the following sequence of events takes place:
• You create a revertible spare drive. See Creating a Spare Drive Manually.
• A physical drive assigned to your disk array fails and the array goes Critical or Degraded.
• G-SPEED Studio XL 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.
• G-SPEED Studio XL 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 an unconfigured physical drive as a transition target
for data from the revertible spare drive.
Configuring G-SPEED Studio XL
XL
p. 99