Thinking more and more about archiving and storage, currently I use multiple extrenal hard drives (Iomega/Lacie) and also back up to DVD and offsite with an external hard drive (2tb Hitachi) and to the internet.
I had two hard drives fail on me not too long ago and although I didnt lose any information it makes me think about the longevity of the backup.
I had thought about using raid devices to continue back up
I have seen this working and it looks excellent but have heard some problems recently
Also had a look at this in Peats, Iomega StorCenter ix2
This is still backed up by optical/offsite and web based storage.