Jamie Zawinsky has a simple backup plan that you may want to consider as well(<a href="http://www.jwz.org/doc/backups.html" rel="nofollow">http://www.jwz.org/doc/backups.html</a>). I would recommend one change to his strategy though, brand <i>does</i> matter, as in get different brands or at least models. What if there's a manufacturing defect in your Eastern Analog Brontosaurus drives? All three could fail in a very short time frame.