Thank you for your help.
I'm now using backuppc without problems, but now i don't know how to store backup data in different disks for each different VM.
Do you know how can i do this with backuppc?
Thank you
Two questions
1) And for backup the VMs is necessary only install BackupPC in the backup server or is needed more additional configurations?
2) Is possible do backup of de VMs with rsnapshot?
Thank you