Imation DataGuard T5R User Manual download pdf (Page 40)

SPARE DRIVE

An unassigned hard drive can be assigned as a spare drive to replace a

failed hard drive in a RAID volume. One that is active and connected is

known as a “hot” spare drive.

• If a hard drive fails within a redundant RAID logical drive, and a

spare drive is present, the system uses the spare drive to rebuild

the array. Rebuilding begins automatically, and the spare drive

becomes part of the RAID logical drive.

• The spare can be dedicated to a speciﬁed logical drive, or

available to any logical drive when needed. If the spare is

revertible, it will revert to spare status after the failed hard drive

has been replaced and rebuilt.

• Some limitations on the use of spare drives with Imation

DataGuard Appliances:

✴ A spare drive cannot replace a failed hard drive in a RAID 0

logical drive because of the way data is written to hard drives

under RAID 0 (see page 34).

Storage > Spare Drive > Create Spare Drive (T5R)

CreAte SpAre drive

To assign a spare drive:

1. From the Storage tab, click the Spare Drive menu item. If any

spare drives are present, they will be displayed in a list here.

2. Click the Create Spare Drive button.

3. Click on an available physical drive in the diagram to select it as a

spare drive. The ID numbers of the selected hard drive will appear

in the ﬁeld below the diagram.

• Choose the options for the hot spare drive. The Revertible option

allows the spare drive to revert to hot spare status after a failed

hard drive is replaced and rebuilt. At this point, the used spare

drive will automatically be freed up and become a revertible spare

again after the reversion process, called transition, is initiated and

completed in the background.

• The spare drive can be Global or Dedicated. A Global spare is not

dedicated to a speciﬁc RAID array, and remains available as a

hot spare for any RAID array. A Dedicated spare drive is assigned

to a speciﬁc RAID array. For most users, a Global and Revertible

conﬁguration is best.

• You can also enable Media Patrol when creating a spare drive. All

these options can be changed after the spare is created.

To change settings for an existing spare drive, click on the button for

the listed spare and change the settings as desired.

Storage > Spare Drive > Create Spare Drive (R4)

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Imation DataGuard T5R User Manual Page 40