I am moving into a small empty room that I am converting into a small server room.
I will have just one server rack that will hold five HP ProLiant servers, four G8 one G7. All have redundant 450 or 460 watt power supplies. The rack will also hold a 24-port Cisco Switch a Quantum LTO-6 tape drive and a KVM.
The room is served by two independent 120 volt/20 amp circuits. If I calculated right on the HP Power Adviser, my total draw on these five boxes would be 1243.9 VA, 10.82 amps and 1232.93 Watts.
I was planning to use two UPS's in the rack, one hooked into each dedicated 20 amp circuit and then each server plugged into each UPS. Battery run time isn't real big issue for me as our building is served by a generator that is on an automatic transfer switch that kicks in whenever building power is interrupted.
I was looking at APC's Smart-UPS...