> Like I say I like and use rsnapshot in some places, but speed and
> resource efficiency are not its winning points.
I have never used Rsnapshot, but I used Rsync backups for many years and
then moved to Bup. The time to perform backups has been *very*
substantially shortened by moving to Bup.
The size of the backup repository is also nicely reduced (probably a mix
of compression and of deduplication between files on different hosts
that are backed up to the same repository).
It is also much less demanding on the backup server, both in terms of
RAM use and CPU time (I use low-power SBCs for that job).
A full restore from Bup can be fairly slow, OTOH. Luckily, I've only
ever had to fetch a few files from the backup (via `fuse`), but it does
make it more costly to *use* your backup (e.g. I used to have a script
which tracked the size of the last set of backed up files, as a way to
detect unexpected changes in this size, but that is now impractical).
Stefan
