RReynolds: you may want to update your information about MODERN tape archiving technology. Basing your opinion on magnetic media to technology used by NASA in the 70's is not very valid. Modern DLT tapes eat up 500gigs of data in one tape with GUARANTEES of recovery by the manufacturer. My old Travan tapes have guarantees for 100000 writings - and the technology to warn me should I use a tape that migth not be able to hold my data. And again: why do you guys think big serious businesses use magnetic media (from single DLT drives to tape-archiver robots) to store business-critical data? ... Because it costs them a lot less to buy the tapes than to pay the damages caused by lost data.