Always specify Switchable-by-outlet power bars: Each outlet can be turned on/off via IP commands. This is useful if we need to cycle power remotely to a specific device.
UPS - typically I ask for 30 minutes of backup power for all servers. They are rated in apparent power (VA or volt-amps)
Heat Calculations
CRAC unit
Watts * 3.412 = BTU/hr
20 watt lightbulb * 3.412 = 68.24 BTU/hr of heat load.
3000 watt LED wall * 3.412 = 10,236 BTU/hr of heat load.
It takes approximately 0.4 watts of cooling power to offset each 1 watt of power consumed by a light source