On Thu, 2006-05-11 at 12:35 -0600, Kenneth Burgener wrote: > > With 1TB, a backup is not economically feasible, and I accept this. > What I am asking is if one disk in a RAID 0 begins to die, if I could > rebuild that one disk somehow, and just accept the loss of what data was > on that disk, without having to move EVERYTHING off the array, and then > rebuilding the array. My assumption is RAID 5 has this ability.
No, RAID 0 cannot do this. If you lose one disk, recovery of files off the remaining disks would be difficult especially because RAID stripes the data across all the disks. So if you had 3 identical disks and one failed in this configuration, your file system would have a hole in it every 3 blocks. This is generally considered to not be recoverable. LVM rather than RAID is what you're looking for, as Andrew suggested. However LVM cannot recover from a disk dying any more than RAID can, although if you detect that a disk is failing, you can shrink the file system, move the volume extents and free up the bad disk. After replacing the disk you can add it back into the volume and extend the file system across it again. That is *if* you can catch it in time, which is unlikely. Michael > > > Kenneth > > /* > PLUG: http://plug.org, #utah on irc.freenode.net > Unsubscribe: http://plug.org/mailman/options/plug > Don't fear the penguin. > */ /* PLUG: http://plug.org, #utah on irc.freenode.net Unsubscribe: http://plug.org/mailman/options/plug Don't fear the penguin. */
