On Mon, 25 Sep 2006, Arno Lehmann wrote: >> Not exactly true. > > Theoretically, you're right of course, but Marks setup uses only Full > and Incre backups.
Nark really should look at using Differentials, even if only from a safety point of view (any broken incremental in a chain = possibly unrestorable fileset) > By the way - I do prefer to have longer retention times than strictly > necessary for the given scheme. For example, I'd keep differental > backups for at least 6 weeks - I guess there might be months where you > need 4, not 3, differentials between full backups, and having one > generation more allows not only restores to earlier points in time, but > also ensures I have spare tapes in the pools I can (manually) purge in > case I need them unexpectedly :-) Ditto. I'm keeping some filesets for 14 months. Archival sets are held around even longer than that. WRT spare tapes, once you have a few hundred tapes in the pool it's no real hardship to keep a stock of 10-20 blank ones in reserve.... :) And on the flipside of that - no backup is worth a hill of beans if it {burns|gets stolen|is washed away|is smashed up} with the computers. A _good_ data safe (not just a firesafe, they get hot enough inside to melt plastics) is worth the investment - and that applies whether the data is stored "offsite" or "onsite". ------------------------------------------------------------------------- Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys -- and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV _______________________________________________ Bacula-users mailing list Bacula-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/bacula-users