From: Inno <in...@vo...> - 2010-04-17 11:17:34
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Great ! Thanks a lot ! (but I prefer IncrLevel = 1, 2, 3, 4 it's more logical for me for don't automatic delete backup ^^) But just a last thing. A IncrLevel = 1 it's not a differential backup ? Also this daily copy all modified data from the last full ? Hmm maybe because it's a "rsync" copy it's copy only the real modified data ?! Thanks > Message du 17/04/10 à 11h04 > De : "Luis Paulo" <lui...@gm...> > A : in...@vo... > Copie à : "General list for user discussion questions and support" <bac...@li...> > Objet : Re: [BackupPC-users] Full and Incrementals Backup question > > Right :) > > On Sat, Apr 17, 2010 at 9:16 AM, Inno <in...@vo...> wrote: > > > You disturb me ;-) ! > > I summarize to be sure I understand. > > > > Full : 600 GB > > Data modify by day : 10 GB > > > > ------- > > IncrLevel = 1 > > > > M | T | W | T | F | S | S | <- Day > > I | I | I | I | F | - | - | <- Backup type > > 1 | 1 | 1 | 1 | 0 | - | - | <- Level > > 10| 20| 30| 40|600| - | - | <- DATA COPY BY DAY (GB) > > > > 2nd day you have 20GB different, but 10 are already on the pool. pool grows > only 10GB > 3rd day you have 30GB different, but 20 are already on the pool. pool grows > only 10GB > ... > You end up with 640GB > > ------- > > IncrLevel = 1, 2, 3, 4 > > > > M | T | W | T | F | S | S | <- Day > > I | I | I | I | F | - | - | <- Backup type > > 1 | 2 | 3 | 4 | 0 | - | - | <- Level > > 10| 10| 10| 10|600| - | - | <- DATA COPY BY DAY (GB) > > > > 640GB > > > ------- > > With IncrLevel 1, 2, 3, 4 i'm sure that the incrlevel 3 will be not delete > > if 2, 1 and 0 exist. > > > > It will be the other way around. 0,1,2 will not be deleted if 3 exist > > > > With IncrLevel 1, I'm not sure about that... > > > > You may be making things more complicated that they are. > > You set > FullKeepCnt = 3 > IncrKeepCnt = 10 > > 3 full and 10 incremental are guarantied. There will be more if needed > > You may use the exponential expiry, but the idea is the same. > > ------- > > FullPeriod = 2 > > IncrPeriod = 8 > > > > That means you do a full every 2 days and one Incremental every 8 days. It > has nothing to do with keeping or deleting. > > You'll want something like > FullPeriod = 6.97 # (1 every 7 days) > IncrPeriod = 0.97 # (1 every day) > > Also I keep two weeks of backup (and I'm sure no backup will be not delete) > > > > So you want > FullKeepCnt = 3 # (thats two weeks divided by FullPeriod=6.97 and 1 > extra. It could be 2) > IncrKeepCnt = 15 # (15 days) > > That's the basic. Can't be messed with other confs. I do believe that, > backuppc is well done :) > > > > ------- > > ------- > > ------- > > Thanks a lot :-) > > > > > Message du 17/04/10 à 08h50 > > > De : "Luis Paulo" <lui...@gm...> > > > A : in...@vo... > > > Copie à : "General list for user discussion questions and support" < > > bac...@li...> > > > Objet : Re: [BackupPC-users] Full and Incrementals Backup question > > > > > > Inno, > > > If files are all different, and you modify 10GB every day keeping the 600 > > > total, I think (pretty sure) that yes, on the 4th you'll have the > > original > > > 600GB plus the 40GB differences. > > > That with incrementals. > > > > > > With fulls every day, you'll have just 600GB every day, total on the pool > > > (we are not minding about compression), after the cleanup. > > > > > > (Really hope Les don't mind me saying what he said with other words. I'm > > > taking the chance to think loud with Inno.) > > > > > > But fulls are slower, even with rsync. That also means that with tar or > > > samba are even slower. You know why? > > > I'm going to go through http://www.samba.org/rsync/documentation.html. > > > Something scared me first time, and I didn't return. > > > > > > Thanks, Les > > > > > > Regards > > > Luis > > > > > > On Fri, Apr 16, 2010 at 9:45 PM, Inno <in...@vo...> wrote: > > > > > > > But if I have many data : 600 GB for a full and 10 GB modify by day. An > > > > incremental it's better ? Because if I have a differential backup I > > have 10 > > > > GB the first day, 20 GB the second day... 40 GB the fourth day... ... > > no ? > > > > > > > > M T W T F S S <- Day > > > > I I I I F - - <- Backup > > > > 1 2 3 4 0 - - <- Level > > > > 10 20 30 40 600 <- GB > > > > > > > > > > > > > > > ____________________________________________________ > > > > Nouveau ! Partagez vos envies et découvrez les bons plans voyages des > > internautes sur http://forums.voila.fr/ > > > > > > > > > ____________________________________________________ Nouveau ! Partagez vos envies et découvrez les bons plans voyages des internautes sur http://forums.voila.fr/ |