Yeah I was gonna try and KISS (Keep it simple stupid) and not RAID the disks, just mount them both at boot time and use scripts and cron to keep the drives the same (say a script that compares the two drives every hour and copies if needed) as I wont be using it loads to warrant RAID I feel.

Think if I was to buy another IDE/CF adapter and use a CF card and a USB stick, that would cover me as one would be hot swappable and the other not.

Then regular backups to DVD and portable HD should suffice I think.

Was just thinking RAID as it would possibly tell me when a hard drives likely to fail.