I had a need to install a remote webserver in my multiserver network on a host service that does not offer backups or snapshots. My plan was get it up and working and then use rsync to copy over the critical folders to another server. In the event of total failure of this remote server my plan is to use the host service re-install base os Debian 9 and get the server up and running, and then rsync back all ISPConfig needed specific folders. Question is what specific folders need to be copied. This is going to be a remote webserver so I need ftp, apache, mysql, postfix, letsencrypt, and webstats services. Thanks!