I run a drive/file system validation utility about once every month or two on my archives. It's too much work to do that frequently on the small capacity media like CD and DVD ... loading and unloading 200-300 of these volumes is days of tedious work ... so I concentrate doing that for the hard drive archive systems only. Mount a terabyte drive, say "validate it" and come back in a couple of hours. All the hard drive archives are twinned disks so if there's a problem with one, the other is likely just fine and I dump the bad, replace it, recopy the data. (It's not happened in the past four years of doing it this way ...)
For the small media, I just make two copies and store them carefully. So far, on spot checks, they're all fine. If I find a bad one, I'll make another copy of the good one. Replication, replication... Godfrey On Apr 3, 2008, at 11:01 AM, Bob Sullivan wrote: > I understand the need for archival storage and try to do some. > My main fear is the amount of data I manipulate now and will in the > future. > With a large amounts of data, checking the conditions of the back-up > becomes an issue. > Some of us have encountered problems where the backup hasn't worked > for the last 15 months. > You only find that out when you try to go back and retrieve something. > -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
