[CentOS] Backup PC or other solution

I wonder why nobody has yet mentioned rdiff-backup. It combines 
browsable directories with multiple versions - the version data is 
stored in a separate rdiff-backup-data subdirectory (one per backup task).

One downside is that rdiff-backup causes a lot of network traffic. For 
that reason I currently use rsync to copy over network, and then I use 
rdiff-backup locally to create a repository with multiple versions.

Another system that we use is rdiffweb. It uses rdiff-backup over 
network and adds a web interface for clients to browse and restore files 
or directories. I did not personally set it up, but it seems to work fine.

- Jussi