Is it possible to add a disk to a RAID 0

Discussion in 'Mac Pro' started by dubaimac, Dec 23, 2009.

  1. dubaimac macrumors regular

    Jun 26, 2009
    Morning all,

    I trashed my Intel Gen2 SSD raid last night, and I'm only using one disk now after tonnes of problems, (10.6.2), I have another faultless RAID0 with 2 WD 1TB blacks, since I'm not using my other SSD, I can pull that and add another WD black, could you give me the best way to add a disk to my RAID0, or if it is not possible how to preserve the data on it, I have a drobo with 4TB so I can copy it all off, the RAID0 is where I have my home folder, as well as my itunes 600GB, so it is precious stuff.
  2. nanofrog macrumors G4

    May 6, 2008
    If you want to expand a stripe set, you have a bit of effort on your part, as it's not capable of online expansion (add a drive, and the card does the rest for you). :(

    So you have to backup, add the drive, re-initialize, and restore whatever you want on the drive (OS, data, apps).

    As per the 10.6.2 issue, it's caused instability with RAID in many cases, including proper hardware cards. So you might be better off rolling it back to 10.6.1 for the time being. Unless you've determined that expanding the mechanical array is in your best interest (better suits your usage = improved overall system performance).
  3. JPamplin macrumors 6502


    Mar 12, 2009
    Nashville, TN
    Is it possible? No. No it isn't.

    Time Machine backup. Restart from SL installer disk. Reformat new drive with new RAID setup. Install OS. Restore from backup.

    That's it. Don't ask for alternatives, as there are none.

    Thank you, drive thru.

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