On Tue, 2011-09-27 at 16:51 +0100, Gavin McCullagh wrote: > It sounds like what you're looking for could be implemented as: > > 1. A normal Full/Differential/Incremental job to a disk-based storage > device to happen during the day. > 2. A Migrate job to tape from disk to happen during the night.
Yep, http://www.bacula.org/manuals/en/concepts/concepts/Migration_Copy.html is what I was looking for. > To be honest though, the above work-flow raises a lot of questions for me: > > 1. You're doing backups of your live servers _during_ working hours. This > is the opposite of what most people ordinarily do. Does this not create > load on the already busy servers? Are the backups you get always in a > consistent state? Okay, it is not _really_ during day it is more like backups over night to disk and backup to tape should be finished in the morning. But this is just a detail. We did not have (yet) really (big) problems about consistency. But as you say these systems are live systems and if a we hit a bad timing, that is always a problem. > > 2. It is apparently not possible to backup all 100 hosts straight to > tape, so you write them to disk first. Why is that? It sounds like > you're manually doing "Spooling", which Bacula has transparent support > for. You could, in Bacula, set up a single job which copied the backup > data to disk first and then as that continues, spool them out to tape. > This would need mean the two jobs happening at the same time, so you'd > have to do it at night -- or else the tape drives would not be available > during the day for restores. This may be a limitation of the current backup software in use. It may be faster this way (we are using a tape changer). We also have had troubles with some tape drives and this way (backup first to disk) was an advantage so the backup was already on disk and we just had to fix the tape changer and backup the disk volume to tape. I am really open do to it the "bacula way" if there is a better workflow. > > 3. Do you use Incremental backups at present or full backups each day? Actually mostly differentials. ------------------------------------------------------------------------------ All the data continuously generated in your IT infrastructure contains a definitive record of customers, application performance, security threats, fraudulent activity and more. Splunk takes this data and makes sense of it. Business sense. IT sense. Common sense. http://p.sf.net/sfu/splunk-d2dcopy1 _______________________________________________ Bacula-users mailing list Bacula-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/bacula-users
