Restoring to a "soft" RAID from Time Machine backup

Discussion in 'OS X Mountain Lion (10.8)' started by Dark Goob, Aug 27, 2012.

  1. Dark Goob macrumors regular

    Dark Goob

    Joined:
    Jun 6, 2007
    Location:
    Portland, OR
    #1
    Before I ask this question, please take a look at my system layout, just so that you know what I'm dealing with here: (see below for the actual question)

    System Information:

    Type: Mac Pro (Early 2009)

    Internal Physical Drives & Volumes:

    (A & B) - 4TB striped "Soft" RAID
    (Composed of Two 2TB Hitachi 7K2000 drives)
    Volumes:
    #1 - OS X 10.7.4 main boot partition
    #2 - Media storage partition
    #3 - Archive storage partition
    NOTE: There is no Lion "Recovery Partition" because
    Apple does not allow a recovery partition for
    a Lion install that is on a "soft" RAID (despite
    the presence of non-RAID disks in the machine!).

    (C) - 640GB Western Digital Caviar Blue drive
    Volumes:
    #4 - OS X 10.6.2 emergency partition
    #5 - Bootcamp partition (Windows 7)
    #6 - FAT32 partition for copying files between Mac & Bootcamp
    (D) - 1TB Seagate Barracuda drive
    Volumes:
    #7 - Backup partition (used to store disk images of laptop)

    External drives & volumes:

    (E) - 4TB "Hard" RAID in Rocstor ArcticROC FW 800 housing
    (Composed of Two 2TB Western Digital Caviar Green drives)
    Volumes:
    #8 - Time Machine partition (backs up all volumes on (A & B))

    Questions:
    • If I update volume #1 above to 10.8, but then I need to restore volume #1 back to 10.7.4 using Time Machine, will I be able to? (I only ask because I have heard people say that you cannot restore from Time Machine onto a volume that exists on a "soft" RAID.)
    • How would I perform this restore, since I will have neither a 10.8 startup DVD nor a "recovery partition" to boot up from? (Can I boot up from the 10.6.2 partition and do it from there?)

    Thank you.
     
  2. Dark Goob thread starter macrumors regular

    Dark Goob

    Joined:
    Jun 6, 2007
    Location:
    Portland, OR
    #2
    According to this 2008 post on Apple's discussions site, Time Machine cannot restore a backup to a volume that exists as part of an internal "soft" RAID (aka RAID 0 [zero]) array.

    Of course, that post was from four years ago.

    Does anyone know if it's still true? I'm going to have to call Apple aren't I?
     
  3. Dark Goob thread starter macrumors regular

    Dark Goob

    Joined:
    Jun 6, 2007
    Location:
    Portland, OR
  4. Dark Goob thread starter macrumors regular

    Dark Goob

    Joined:
    Jun 6, 2007
    Location:
    Portland, OR

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