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Disk Utility 12.x: Delete a RAID set

Delete a RAID set using Disk Utility

You can delete a RAID set if you want to use its disks for another task.

To remove a disk from a striped RAID set or concatenated disk set, you must delete the set first. You can remove disks from a mirrored RAID set without deleting it.

Always back up any important files before you delete the set. Deleting a striped RAID set or concatenated disk set erases all the disks in it. Deleting a version 2.0 mirrored RAID set leaves a copy of the set’s files on each disk, but you should back up any important files as a precaution.

  1. Back up any important files.
  2. Open Disk Utility, in the Utilities folder in Launchpad.
  3. Select a disk in the set that you want to delete, and click RAID.
  4. Select the RAID set.
  5. If you’re deleting a mirrored RAID set and you see a Convert button, click it to convert the RAID set from version 1.0 to version 2.0.

    Deleting a version 2.0 mirrored RAID set leaves a usable copy of the set’s files on each disk. Deleting a version 1.0 set leaves the disks unreadable.

  6. Click Delete.
Last Modified: Jul 11, 2012
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  • Last Modified: Jul 11, 2012
  • Article: PH5827
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