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How to Use Disk Utility to Create a RAID 1 (Mirrored) Array
  1. Access Disk Utility via /Applications/Utilities. Make sure that the drive / drives are connected to your computer and turned on.
    1-Open-Disk-Utility

  2. Once Disk Utility is open, click on one of the drives that you want to create the RAID 1.
    2-Click-on-one-of-the-drives

  3. Click on the RAID tab.
    3-Click-on-RAID

  4. Enter a name under RAID Set Name to name the drive. This will be the name of the drive that will appear when mounted in Finder.
    4-Name-RAID-Set-Name

  5. Make sure that the Volume Format says Mac OS Extended (Journaled).
    5-Format-Mac-OS-Extended-Journaled

  6. In RAID Type, click on Mirrored RAID Set.
    6-RAID-Type-Mirrored-RAID-Set

  7. Drag the two drives that you want to create a Mirrored RAID with into the white box.
    7-Drag-drives-into-white-box

  8. Once both drives are in the white box, click on Create, then Create again on the Warning Message to start building the Mirrored RAID Set.
    8-Click-Create

  9. Once the process has completed, the drive will mount in Finder.
    9-Mount-in-Finder

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Article ID: 171 Article Created: 04-15-2014 17:26 PMLast Modified: 04-15-2014 17:26 PM

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