I am looking again at air conditioning for a proposed server room.
While I don't mind over-egging it, I would like to know how much custard I'm throwing around here.
The servers in question are HP DL360 Gen 9s which are each fitted with 2 800w powers supplies. My understanding is that one of these will be a redundant standby supply which means the server should run happily on just one 800w supply.
However, there are figures quoted at the bottom of the parts specification for the server which state:
Power Summary (based on 100% utilization)
Total system VA rating 343.35 Total system BTU/hr 1154.31 Total input system current 1.56 Total wattage 338.51 Power supply efficiency (0.93) Power factor (0.99) Inrush current (30) Leakage current (0.75)
The company group IT dept seem to be suggesting that we should be providing 1.6Kw of cooling for each server (for the two 800w supplies). My understanding would be that the server power consumption and therefore ability to generate heat would be limited to the 343.35VA. Not sure what the difference is between VA and watts to be fair, but this gives a factor of 5 between the two figures. Anyone able to clarify whether either approach is correct please?