I am looking for a way to backup XenServer (or XAPI) VMs
- incrementally. backup just changed data every time.
- without performance penalty, slowing down the server after the backup is done (snapshots do that, right?)
- with possibility to go back in time, not just to the last backup.
I currently use rdiff-backup
as filesystem-level solution to this problem. However this tool is afaik unmaintained and contains serious bugs.