Not really a boatload of gear, disk arrays or a few blade center installs is easily enough to use all of our 3-phase 32-amp.
15kw a rack now is pretty easy without trying but at the end most enterprise DC's are only averaging 1-2kw / sqm actual from what I see which is still easily to cool in conventional ways (sure they may have a few higher power racks in the room but that's just a few)
If you are outside conventional enterprise into the google/Microsoft/amazon type cloud DC then they are likely using 15kw for every rack due to massive density :-O
15kw a rack now is pretty easy without trying but at the end most enterprise DC's are only averaging 1-2kw / sqm actual from what I see which is still easily to cool in conventional ways (sure they may have a few higher power racks in the room but that's just a few)
If you are outside conventional enterprise into the google/Microsoft/amazon type cloud DC then they are likely using 15kw for every rack due to massive density :-O