Good point about the media backup, I haven't reached that completely digital state yet.
And the only problem with Moby or any other online backup is for really huge amounts (1TB say), it would take YEARS to do the first upload if you tried to stay within the transfer limits of most ISPs
Yeah the DNS-323 uses ext2 or ext3 so if the unit dies completely I can still mount the drives elsewhere and read the files, that was one benefit.
They should make a NAS with a hot-swap tray, 2 mirrored drives and one tray that you can hot-swap out, and a built in jungle disk (or whatever) module for backup to the cloud.