I mean OS/hardware virtualization. When I’m talking about what Virtualmin does (GPL and Professional) I use the phrase “virtual hosting”. Not the same thing, though that darned word “virtual” comes up in both cases. It sounds like you’re thinking VM2 is somehow part of Virtualmin Professional…it isn’t.
VM2 is not Virtualmin (GPL or Professional). They are two separate products–though they happen to work well together and when used together they are more powerful, you don’t need one for the other or vice versa.
Virtualmin does no hardware virtualization, and never will. It is not at all operating at that level. It manages virtual hosting websites and the related users.
VM2 manages lots of systems–including virtualized systems of many types. In its simplest (and cheapest) form, it manages regular old dedicated servers. It just makes it easier to keep up with what all of your Virtualmin systems are doing. In the more advanced forms, it creates and manages Xen, vserver, Solaris Zones, and EC2 instances across any number of machines.
That doesn’t make any sense. A restored virtual host couldn’t possibly cause a system crash–the system would have to have serious problems for anything in userspace to be able to crash it.
If you can give us some idea of the errors, we can probably guide you on getting things straightened out…but if your box is crashing, I can assure you that you have bigger problems than your restored websites.
Also, you’ll want to start a new thread specific to your problem. We get a lot of queries every day, and if the threads get too long and convoluted we have a hard time keeping up and figuring out what problem we’re talking about.