Hello Deven, On 21.05.2015 17:23, Devin Reade wrote: > --On Thursday, May 21, 2015 09:06:41 AM +0200 Kern Sibbald > <k...@sibbald.com> wrote: > >> Bacula does keep 64 bit addresses. > Excellent. Not surprisingly, I'm not dealing with file sizes near 2^63, > but I *do* need to back up files that are in the 2^39 range (from > filesystems that are in the 2^46 range onto virtual cartridges no > larger than 2^43). No, these aren't database files, they're huge > chunks of write-once data for which we need archival copies. I'm > still debating whether Bacula is the right tool for the job in this > case. Network-based copies to geographically different locations > is a non-starter, so it's got to be a variant of sneaker-net. > >> On the SD >> output end, if you do not limit your Volume size, there will surely be >> some problems at 2^63. Of course, who would ever want to write such a >> large volume? > On that note, I've traditionally gone with volume sizes in the ~500MB (2^29) > range (for disk stores), but in this case that can push the volume > count in the catalog to more than 512k entries once a minimum number > of offsite copies have been made. Have you seen installations with that > many volumes? If so, are there any known issues other than catalog tuning?
I think you will probably want Volume sizes that are more like 50GB, and possibly much larger. Bacula is not designed to handle more than a few thousand Volumes (handling more will come later), thus with 512K you may see some performance problems. > > I'm thinking that a larger volume size (and consequently smaller > volume count) could be warranted (at least for the full pool), but > I'm wondering if there have been many that have passed volume > sizes past 2GB or 4GB and if there have been any issues in doing so. There are no issues except retention periods. If you have lots of data over say a week, I would not hesitate to have Volumes of several hundred GB. > > My gut is saying to go with 2GB volume sizes, but I'm curious. Probably bigger unless your dataset is tiny. > > (Considering that my first hard drive cost me $4000 and was 40MB, all > the above just sounds crazy.) Yes, it is all crazy -- what is good is that for the most part, Bacula has scaled rather gracefully. Best regards, Kern > > Devin > > > ------------------------------------------------------------------------------ > One dashboard for servers and applications across Physical-Virtual-Cloud > Widest out-of-the-box monitoring support with 50+ applications > Performance metrics, stats and reports that give you Actionable Insights > Deep dive visibility with transaction tracing using APM Insight. > http://ad.doubleclick.net/ddm/clk/290420510;117567292;y > _______________________________________________ > Bacula-users mailing list > Bacula-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/bacula-users > ------------------------------------------------------------------------------ One dashboard for servers and applications across Physical-Virtual-Cloud Widest out-of-the-box monitoring support with 50+ applications Performance metrics, stats and reports that give you Actionable Insights Deep dive visibility with transaction tracing using APM Insight. http://ad.doubleclick.net/ddm/clk/290420510;117567292;y _______________________________________________ Bacula-users mailing list Bacula-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/bacula-users
