RAID Utility - Setting Up a Spare Drive

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Setting Up a Spare Drive

You can set aside an unassigned drive as a global spare. Then, if any disk in a RAID set
fails, the spare is automatically integrated into the set to take the place of the failed
disk. Only RAID 1, RAID 0+1, and RAID 5 sets can take advantage of spare drives.

To set up a spare drive:


Open RAID Utility.


Select the drive you want to use as a spare in the left column.


Choose RAID > Make Spare.

You can also assign unused drives as spares by selecting the “Use unassigned drives as
spares” option when you create a set using the Create RAID Set command.