Bas,
How has the Rsnapshot worked with regards to your CPU usage? We are currenlty doing a scripted zip based back up and it seems to be taking up to 5 hours at times to complete if it completes successfully. The amount of information in the moodledata folder that we are backing up is close to 124 GB.
What have you seen with the use of Rsnapshot? Good, bad or otherwise?
Thanks,
Tadge