A small question due to relocation or installation of new servers .... with what or how you backup your data (/var/www/virtual; /var/mail/virtual; databases, etc.)?
I myself use rsync for backups. Is there instead a fast backup program for Linux? A question would be where you backup your data? External Hard Drive, Cloud, Network, other Colocation, and so on?
Maybe also interesting for "newbies" how to properly backup their data.
I tested Bacula. There was also a great backup solution but i think Bareos is better. 