Hmm...that's an interesting use case. Can you please tell me what these servers are? How many of them do you have compared to the total number of hosts? Do you use any Business View groupings or you're using infrastructure tree as a main monitoring view?
On a side note, there is a way to exclude specific object from monitoring/alarming via maintenance mode
. As far as I remember, we have implemented scheduling for this feature in v9, I can double-check it for you tomorrow.