I don't know about the Dell (shouldn't be a problem, their pretty Linux friendly on the desktops/servers).
Guess your having a server barbeque huh?
That's why we moved our servers to a colo, our data center had an AC failure, the alarm didn't go off, and the total bill was nearly $10,000 for all the fried equipment. This happened in September with 100+ F temps out side, while I was on a fishing trip. My cell never rang from the alarm company (because their alarm was faulty).