After data loss you are forced to learn

For our servers we use RAID (mirroring) and then off-server back-up onto another server that ALSO has RAID (mirroring).
I added mirroring to the backup server after one of the drives failed in that server... I thought if for some ODD reason during the repair/re-install on that box if something went down on the other I`d be screwed.
I also tend to randomly back-up locally on DVDs too
