Originally Posted by 5eb 
I use two two-bay QNAPs and do RAID1 on 1.5TB drives from Seagate. Works brilliantly, I have them plugged into my TimeCapsule and stream my media from it. Eventually I will put my iTunes library on it and manage it via TuneRanger - total safety.
I wouldn't want to go back to non-RAID. It's a nice, safe, cosy feeling... ;-)
Well I wouldn't say
total safety, you still have a single poiunt of failure in the controller card, and if another error mangles the data on the disk, it is mangled on both. RAID is not really a substitute for backup, although syncing a raid solution to either another RAID or even a single drive is effectively a backup - provided it is kept offline once the backup has been taken.