we use rsnapshot for data backups within vm's. in case you are not familiar with rsnapshot - from the man page:
we have 3 large rsnapshot backup vm's, each with 1TB or great disk for rsnapshot use.
for one of those:
backup to ceph-fs uses 70GiB
backup to pbs uses 1.58TiB
Still since PBS may use some rsync like code , is it possible that turning on something like rsync's -H flag could increase efficiency ? [ probably not I'd guess ] .
overall we are very pleased with PBS..
Code:
rsnapshot is a filesystem snapshot utility. It can take incremental snapshots of local and remote
filesystems for any number of machines.
..
rsnapshot saves much more disk space than you might imagine. The amount of space required is roughly the
size of one full backup, plus a copy of each additional file that is changed. rsnapshot makes extensive use
of hard links, so if the file doesn't change, the next snapshot is simply a hard link to the exact same
file.
we have 3 large rsnapshot backup vm's, each with 1TB or great disk for rsnapshot use.
for one of those:
backup to ceph-fs uses 70GiB
backup to pbs uses 1.58TiB
Still since PBS may use some rsync like code , is it possible that turning on something like rsync's -H flag could increase efficiency ? [ probably not I'd guess ] .
overall we are very pleased with PBS..