Tonight I’ve spent several hours trying to back domains up in Plesk and restore them on another Plesk install on another server. Let me just say that it is not trivial. I’m not sure how good Ensim, cPanel or other similar web server software is at the process but if you’re going to use Plesk and potentially could have to move domains, prepare yourself for an adventure. Note: this only applies to Plesk 6. Plesk 7 is out and I haven’t tested it to see if the process is any easier in the new version.