Re:ZFS filesystem (Score 2, Informative)

I'm another fan of backups to disks stitched together with ZFS. In the last year I've had two cases where "zfs scrub" started to report and correct errors in files one to two months in advance of a physical hard drive failure (I have it scheduled to run weekly). Eventually the drives faulted and were replaced, but I had plenty of warning, and RAIDZ2 kept everything humming along perfectly while I sourced replacements.

For offsite backups I currently rotate offline HDD's, but I should move to Cloud storage. Give a bit of my surplus space and bandwidth to someone like Symform, and in turn they give me a free little slice of the Cloud to have TrueCrypt archives mirrored into. Win-win!