When I look at some datasheets of servers they often express the power consumption in Watt. (eg 300 Watt.)
The datasheet also gives me an indication of the current drawn (eg 4A).
4A x 230V gives me 920 Watt which is much higher then the 300 Watt.
I suppose the 4A is a current which 'can' be drawn (during startup ?) and that I have to consider the 300 Watt for sizing an UPS?