Why doesn't FileVault work on a RAID?

Discussion in 'Mac OS X Lion (10.7)' started by Julien, Jul 26, 2011.

  1. Julien macrumors G4


    Jun 30, 2007
    I have a RAID and Turn On FileValt is grayed out. I have seen threads and posts saying it doesn't work with a RAID. Is there a technical reason it doesn't or can't work (files being divided over disks?)? Or is this just an Apple implementation that needs to be address?
  2. ginkaninka macrumors newbie

    Jul 23, 2011
    I think this could be because Apple want you to use Core Storage instead. This supports RAID-like spanning of disk with encryption.

    In the Terminal, check the man page for 'diskutil' and read the section regarding Core Storage near the end.

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