Runing a 2500 off two seperate power phases

[mattdwen]

We have a couple of 2500 servers here running off an APC 3000XL UPS. At the moment, the primary power rail for the servers comes off the UPS (so that we AVR protection as well), and the second rail is driven by the the normal wall outlet (which is on the same power phase in the builing in the UPS).
What we want to do, is run the UPS off a completely seperate phase, so that if one fails for whatever reason (we have particularly dodgey power here), then the server will flick onto the input with the good phase.
Does the server power system allow for this though? Can it accept voltage from two seperate phases without blowing itself up?

 

[johnny99]

We have a bunch of 2550's all with dual power supply.

We use 3 phases for all the computers in our computer room. All are on the same UPS but we split load on the different phases. We try to keep the two power supplies from using the same phase / power distribution.

Have had no problems with that, but I would put all phases on UPS not only one.

/johnny