Is it possible to backup a server and restore a new server ?
as transfer the old image to new server purpose ?
If both servers have the same FreePBX version it should work fine.
logon to asterisk server in cli mode, then find the path I need for compressed backup file , like mine ;
asterisk# cd /var/spool/asterisk/backup/Full_Backup_01042014
then ftp the file xxxxxxxxx.tgz to where you want to keep .
Any alternative solution might be use (if you have) a DAT tape unit to store backups…