We are in the process of replacing our main server at the moment. We have decided to make the move to a virtualised system built on the free version of VMWare's hypervisor, ESXi 5.0. There are a number of reasons we are making this move but one of the main reasons is separation of function.
We had a powerful thunderstorm pass over today. As it looked like it was going to pass directly overhead I powered down our entire computer system and disconnected them from wall sockets, power sockets etc. - phones, desktops, laptops, servers and so on.