On Wed, 2022-11-09 at 09:46 +0100, to...@tuxteam.de wrote: > On Wed, Nov 09, 2022 at 09:39:45AM +0100, hw wrote: > > [...] > > > When you keep N full generations of backups it's different. Using rsync, > > you'll > > only write the changes anyway, switching between the generations. Most of > > the > > data is being stored N times. > > Pehaps you don't know about rsync's --link-dest option: you can, with rsync, > keep generations without duplicating between them.
No, I didn't know that. My intention has always been to create N copies. I'm trying to figure out if I should change that. > But, as others have said, deduplication at the file system level (or below, > as VDO does) is mainly interesting where you have a whole herd of VMs or > containers which are constantly being cloned and too few sysadmins. That's > where those solutions shine (i.e. dedup across "space", not "time"). Well, I'm undecided about that when it comes to backups ... Why I would clone VMs or containers all the time?
