On Sun, 20 Aug 2017 02:05:46 -0400 Gene Heskett <[email protected]> wrote:
> On Saturday 19 August 2017 23:07:01 Celejar wrote: > > > On Thu, 17 Aug 2017 11:47:34 -0500 > > > > Mario Castelán Castro <[email protected]> wrote: > > > Hello. > > > > > > Currently I use rsync to make the backups of my personal data, > > > including some manually selected important files of system > > > configuration. I keep old backups to be more safe from the scenario > > > where I have deleted something important, I make a backup, and I > > > only notice the deletion afterwards. > > > > > > Each backup snapshot is stored in its own directory. There is much > > > redundancy between subsequent backups. I use the option > > > "--link-dest" to make hard links and thus save space for files that > > > are *identical* to an already-existing file in the backup > > > repository. but this is still inefficient. Any change to a file, > > > even to its metadata (permission, modification time, etc.), will > > > result in the file being saved at whole, instead of a delta. > > > > > > Can you suggest a more efficient alternative? > > > > There's Borg, which apparently has good deduplication. I've just > > started using it, but it's a very sophisticated and quite popular > > piece of software, judging by chatter in various internet threads. > > > > https://borgbackup.readthedocs.io/en/stable/ > > > > Celejar > Amanda has quite intelligent ways to do that. I run it nightly and have [Snipped lots of miscellaneous, but seemingly irrelevant, discussion about Amanda's virtues.] Amanda does deduplication? Link? Celejar
