On 2006-04-10, Mark Nienberg wrote: > > How is your method different from the Daily, Weekly, Monthly Tape Usage > Example in the Bacula Documentation? >
1. The scheduling is different. In Bacula you cannot schedule on the last workday of a month or week because Bacula doesn't know of workdays and holidays. The internal scheduling mechanism does also not know of exceptions. At least at my site there are some days where no operator is here to change tapes and where no backup should take place (because the data is not altered much anyway on these days). 2. The volume recycling is different. I cannot use a recyling based on fixed dates(VolumeRetention), because backup does not take place on fixed dates(exceptions, holidays). My recycling mechanism is: Only overwrite the tape with the oldest data, nothing else. If there are holidays for one week, you end up with 7 tapes which can be overwritten in any particular order when you use the example in the bacula documentation. 3. The tape change is different. As I said in the howto, for security reasons we change tapes daily. Monthly and weekly tapes are stored offsite. So if the site burns down we can restore at least the state before the last weekend. Also I want to have the backup done in a definite timeframe during the night. Its not acceptable for me when the operator needs to change tapes in the morning and the backup is done during the day. Of course you can change this behaviour easily when you set "Maximum Volume Jobs = 2" (for files and catalog). However, that does not mean that my backup scheme is somehow better than others. What backup method one uses depends from the specific needs. I think most admins prefer a "fire and forget" solution with minimal human intervention. This often means that the tape resides in the streamer/changer until the backup software notifies the operators to insert some other tape. -- Georg ------------------------------------------------------- This SF.Net email is sponsored by xPML, a groundbreaking scripting language that extends applications into web and mobile media. Attend the live webcast and join the prime developer group breaking into this new coding territory! http://sel.as-us.falkag.net/sel?cmd=lnk&kid=110944&bid=241720&dat=121642 _______________________________________________ Bacula-users mailing list Bacula-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/bacula-users
