Physical and logical volumes

Discussion in 'macOS' started by deboni, Jan 4, 2009.

  1. deboni macrumors member

    deboni

    Joined:
    Jun 9, 2007
    Location:
    Oakland, CA
    #1
    Does anyone know of a way to merge multiple physical drives into a single logical volume that is not a RAID volume and which allows their combined space to be accessed contiguously?

    For instance, I'd like to combine a 320 GB drive and a 240 GB drive, and get a single 560 GB volume, minus file system overhead.

    I believe ZFS will allow this, but I don't know how to do it while waiting for that file system. I have several unused drives I'd like to combine this way, if possible. If there's a utility or application that allows it, I'd love to hear about it.

    Thanks!
    Tom
     
  2. maclover001 macrumors 6502a

    maclover001

    Joined:
    Mar 25, 2008
    Location:
    Vancouver, Canada
    #2
    Go to Disk Utility (In the utilities folder), and make a new Concatenated RAID setup for said drives. You do not need RAID hardware to do this.
     
  3. deboni thread starter macrumors member

    deboni

    Joined:
    Jun 9, 2007
    Location:
    Oakland, CA
    #3
    Thank you. I did not know about that capability.

    Tom
     
  4. Nermal Moderator

    Nermal

    Staff Member

    Joined:
    Dec 7, 2002
    Location:
    New Zealand
    #4
    It's worth noting that you can't split the concatenated volume back up again. For example if you have two 250 GB drives but only 200 GB of data, you can't swap back to using a single drive without formatting.
     

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