I think what happens is that the server doesn't come back up after security maintenance a lot of the time and it stays down until someone shows up to work and restarts it. Even when someone restarts it, you are talking about at least 5 min for it to come back up on a good day.

Our main business servers at work have much more data and do much more work than what the evony does and they can all be restarted in 60 seconds or less if the have to be restarted...

They probably lack qualified people to set their stuff up :P