Product manual

Conguring G-SPEED Studio XL

G SPEED

STUDIO

with Thunderbolt™

p. 99

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.