Just remember that magnetic media (harddrives and tape) are even more susceptible to errors than CDs/DVDs. They damage more easily due to temperature and magnetic fields. And my very favorite, there is the possibility that cosmic particles can actually damage data on a drive (they come through, disrupting the magnetic field of the media). Great, now I have to enclose my computer in a lead case with magnetic containment unit surrounding it. :) Best way is multiple storage media and proper storage practice. I always burn at least 2 copies of everything and keep them in 2 places. Best to keep CDs/DVDs in a nice somewhat controlled climate (preferrably low humidity and medium temperature - ie. room temp). @sheila - I meant that an archival grade DVD-R is probably the next thing.