RAID Rebuild notes

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Various Cobalt appliances support RAID:

  • RaQ 4r (RAID 0 or RAID 1)
  • RaQ 550 (RAID 0 or RAID 1)
  • RaQ XTR (RAID 0, RAID 1, RAID 5)
    • RAID 1 for an XTR with only two hard drives installed
    • RAID 5 for an XTR with three or four hard drives installed
  • Qube 3 Professional (RAID 0 or RAID 1)


With the RaQ 4r and RaQ 550, if the primary disk fails (front right corner, looking at the RaQ from the front), you should move the still-working secondary drive to the primary position, and install the new blank hard drive as the secondary. The new drive must be at least as large as the original drive (it can be larger, but you will not be able to use the extra space).

Also, with the RaQ 550, the RAID is rebuilt at 100 kb/s. So the larger the hard disks are, the longer it will take to complete. You can reboot during a RAID rebuild if necessary; however the RAID rebuild will start from scratch upon power-up.

Finally, if you have to emergency power off or have a kernel panic that halts your Cobalt RaQ, the system will rebuild the RAID drive from scratch.

If you have a RaQ 3i or RaQ 4i with a second IDE connector, you can install a second hard drive and rebuild the system with the RaQ 4r or RaQ 550 OS. There is currently no good/easy way to modify a single drive system to use RAID without performing an OS Restore.

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