Good idea. Gavin McCullagh wrote: > Hi, > > I'm not sure if this suggestion is well-known already, implemented already > or maybe just a plain stupid idea that wouldn't work. So, I'm going to > suggest it and don my flame-retardant suit. Feel free to flame or shoot > it down. > > Suppose I do monthly full backups with differentials and incrementals in > between. I'd like to hold onto many years of monthly snapshots. A file > which is in the backups unchanged the entire time will be duplicated 12 > times each year. This is kind of wasteful and will be expensive. What I'd > prefer to do is keep a series of full backups (say 6 months worth) and keep > monthly incrementals or differentials which allow me to get back to earlier > snapshots. > > I think this might be doable by, every month, running a (new?) type of > migrate job which takes the oldest two full datasets (fb_t0 and fb_t1) and > creates an incremental dataset (ib_t1t0) which, applied to fb_t1 would give > the older dataset. You would then recycle the fb_t0 dataset but the full > data would still be available via the incrementals. A month later the same > process would happen with fb_t1 and fb_t2. fb_t0 would then be available > via fb_t2, ib_t1t0, ib_t2t1. Over the years, making your way back to the > start would become a longer and longer process, but at least it would still > be possible. > > This seems somewhat similar to the new virtual backup feature (which is a > brilliant one, might I add). > > All suggestions, corrections and criticisms welcome, > > Gavin > > PS if further background is required, see the first three paragraphs of > this earlier thread. > > http://www.mail-archive.com/bacula-users@lists.sourceforge.net/msg36365.html > > > ------------------------------------------------------------------------------ > Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day > trial. Simplify your report design, integration and deployment - and focus on > what you do best, core application coding. Discover what's new with > Crystal Reports now. http://p.sf.net/sfu/bobj-july > _______________________________________________ > Bacula-users mailing list > Bacula-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/bacula-users > >
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