Originally Posted by vinzer 
Not necessarily print, just stick them on negatives. It's probably a far-fetched idea, though.
Question: if the RAID enclosure fails, can I just stick the drives in the failed enclosure into another RAID enclosure with all data intact? Obviously, I have zero knowledge about RAIDs and all.
Sometimes yes, sometimes no. My roomate had three hard drives fail on him (one donated by me, and the other two were his) before he figured out that his RAID controller on his motherboard was fried. It took the drives with it. None of those drives were repairable. That said, a dedicated RAID unit or card (separate from the mainboard of the computer) would stand a better chance against time.
How redundant do you want to get? I think the best system I've seen is the Drobo robotic backup system. It's like a RAID, only a lot easier to maintain. You put two or four hard drives into one, and the box automatically keeps identical backups on the opposing drives. The system even lets you know when there's an issue, and you can upgrade the size of your drives by pulling half of the pair out, and installing the new larger drives, letting it copy itself, and then replacing the other half. No mucking around. Hard drives are a medium that can fail, certainly, but I still think that redundant hard drive backups beat everything else.
Wheatfield has a point: prints will last longer than any other medium we know of. The only issue with prints is you're limited by the technology available to produce them and re-create them. Most minilab equipment is digitally based now, and only prints at 300dpi. So if you backup all your images to 4x6 paper, if you wanted to rescan said image and turn it into a poster ten years from now, it'll look like garbage because you reduced the original negative/file to a tenth of it's former resolution.
My vote would be go with multiple hard drives. That's what I plan on doing with my film, actually. I'm going to keep my negatives archived, but at the same time, have high-resolution scans of them on the computer to access them (or send them to be printed) quickly and easily.