When I backup using Backup Manager, I can only select 5 to 10 sites at a time (depending on their size) or it times out in the browser. I'm using the ftp option to backup the files to a second drive on the server. The problem is that when the next 5 or 10 sites are selected, the backup zip file containing them is given the same name and overwrites the backup file of the previous sites. I have to rename the backup file before beginning the backup of the next group of sites. Just an inconvenience, but it means the backup can't be done totally from within ISPconfig as another program has to be used to rename the files (I use Winscp or Putty). It would be nice if ISPconfig had an option for "backup all sites" and analyzed the site sizes to divide the backup into sequentially named files of less than 1GB.