Ichi (Ni),
Thanks for the link -- but this guy is spending big bucks (~$3k).
You are correct, I store my RAW files on external eSATA drives (1TB, 500Gb, 4x 320Gb, 4x 300Gb, and 2x 120Gb) and additionally archive on DVD.
I also do not use RAID as I maintain daily, weekly, and monthly...