And for the last few years, just to make sure my backups are going to be recoverable, I have a quite decent[2] backup system:
1, use tar to create an archive; 2, split the archive into 100MB pieces; 3, use par2 to create parity files for recovery in case of a media failure, using a 1MB block-size and 535 recover blocks; 4, burn about 3.5GB of data, plus the 530MB of par2 files to DVD; 5, make a duplicate of the DVD.
Results are that if there is a failure of the disc, I can use dd to salvage the readable files, recreate the broken ones and burn a fresh couple of copies. The only time this would fail is if both copies of the DVD, or more than 530MB of data on both discs, were unreadable.
[0] Unknown because they're full-face printable, so no branding, and I no longer have the label for the 50-disc cakes.
[1] From the time-stamps on the files.
Regards, David Bolt
RAR also provides a options to "Create recovery volumes".... Ciro -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org For additional commands, e-mail: opensuse+help@opensuse.org