Hi, 12.06.2009 12:34, Holikar, Sachin (ext) wrote: > Yaa... :-) But for now I have reduced the retention period for the > pools from 120 days to 90 days. And purged one of the volumes from > the pool so that our backup can start. Is it correct what I have > done?
If running the backups at all counts, sure. If having a backup older than three months is important, not. It all depends on your requirements. Arno > > > -----Original Message----- From: Arno Lehmann > [mailto:a...@its-lehmann.de] Sent: Freitag, 12. Juni 2009 10:34 To: > bacula-users Subject: Re: [Bacula-users] Bacula > > Hi, > > 12.06.2009 09:37, Holikar, Sachin (ext) wrote: >> Hello >> >> I agree Arno. But then the problem comes to decide onto the >> rentention period of the pools. Like then it becomes difficult to >> preplan the retention periods of the volumes. And this is what >> happened recently , our backup strategy which worked for last >> year with 4 months of pool rentention period, suddenly did not >> find any volumes to append as all the volumes were last written >> within 4 months of range. Hope I am clear. > > Well, if that's your problem I can only advise to define the > retention times first, and then make sure your setup conforms to > your requirements. In many cases, buying some more tapes would be > sufficient. > > Otherwise, get the backup sets, job frequency and retention times > acked by your management, and then tell them what you need to > fulfil *their* demands :-) > > Arno > >> Thanks, >> >> -----Original Message----- From: Arno Lehmann >> [mailto:a...@its-lehmann.de] Sent: Freitag, 12. Juni 2009 09:32 To: >> bacula-users Subject: Re: [Bacula-users] Bacula >> >> Hi, >> >> 12.06.2009 08:31, Holikar, Sachin (ext) wrote: >>> Hello, >>> >>> In Bacula, we are using LTO-3 Tapes defined in a volume. One >>> strange this we notice is , the tapes are marked as full for >>> different Volume Bytes written. Please see below, for one tape, >>> it shows as around 800 GB of Bytes written and marked as Full >>> (eg AAD413). At the same time other tape is written only 400 GB >>> and showing as Full (E.g AAD483). Is there anything we are >>> missing out to understand or it is something else. Kindly >>> suggest. >> There are two reasons for that behaviour. >> >> One, Bacula considers any write problem as a tape full condition. >> That's because, for a an application, it would be very hard to >> determine if the tape is actually full or not. And, as long as >> the data written to tape can be read (Bacula verifies that at >> least the last block it wrote to any volume can be read), it >> doesn't matter much anyway... >> >> Two, transparent hardware data compression makes it impossible to >> know how much data will actually fit onto a given tape. If >> you've got lots of text data (common for incremental backups of, >> for example, web servers) that will compress very well. If you're >> backing up your movie collection, that will compress very >> little, if at all. The compression ratios the manufacturers give >> are estimates, and ones biased towards better compression for >> marketing reasons even. >> >> So, in short, if you can verify that your tapes are written >> without problems (easily checked in the system's log file), you >> can simply accept the volume sizes given. >> >> Arno >> >> >>> Here is the current status of the list volumes, >>> >>> week Volume Name Volume Bytes Media Type When expire? Last >>> Written Volume Status AAD413 832.36 GB LTO-3 2009/10/02 >>> 2009/06/04 Full AAD463 837.05 GB LTO-3 2009/08/31 >>> 2009/05/03 Full AAD465 1.17 TB LTO-3 2009/09/14 2009/05/17 >>> Full AAD473 125.13 GB LTO-3 2009/10/09 2009/06/11 Append >>> AAD477 501.69 GB LTO-3 2009/08/02 2009/04/04 Full AAD479 >>> 503.99 GB LTO-3 2009/06/07 2009/02/07 Full AAD483 460.94 GB >>> LTO-3 2009/09/26 2009/05/29 Full >>> >>> Thanks, >>> >>> >>> ------------------------------------------------------------------------ >>> >>> >>> >>> ------------------------------------------------------------------------------ >>> Crystal Reports - New Free Runtime and 30 Day Trial Check out >>> the new simplified licensing option that enables unlimited >>> royalty-free distribution of the report engine for externally >>> facing server and web deployment. >>> http://p.sf.net/sfu/businessobjects >>> >>> >>> ------------------------------------------------------------------------ >>> >>> >>> >>> _______________________________________________ Bacula-users >>> mailing list Bacula-users@lists.sourceforge.net >>> https://lists.sourceforge.net/lists/listinfo/bacula-users > -- Arno Lehmann IT-Service Lehmann Sandstr. 6, 49080 Osnabrück www.its-lehmann.de ------------------------------------------------------------------------------ Crystal Reports - New Free Runtime and 30 Day Trial Check out the new simplified licensing option that enables unlimited royalty-free distribution of the report engine for externally facing server and web deployment. http://p.sf.net/sfu/businessobjects _______________________________________________ Bacula-users mailing list Bacula-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/bacula-users
