----- On May 11, 2015, at 5:36 PM, Peter Baldridge petebaldri...@gmail.com wrote:
>>>> Pi dimensions: >>>> >>>> 3.37 l (5 front to back) >>>> 2.21 w (6 wide) >>>> 0.83 h >>>> 25 per U (rounding down for Ethernet cable space etc) = 825 pi > > You butt up against major power/heat issues here in a single rack, not > that it's impossible. From what I could find the rPi2 requires .5A > min. The few SSD specs that I could find required something like .8 - > 1.6A. Assuming that part of .5A is for driving a SSD, 1A/pi would be > an optimistic requirement. So 825-1600 amp in a single rack. It's > not crazy to throw 120AMP in a rack for higher density but you would > need room to put a PDU ever 2 u or so if you were running a 30amp > circus. > That is .8-1.6A at 5v DC. A far cry from 120V AC. We're talking ~5W versus ~120W each. Granted there is some conversion overhead, but worst case you are probably talking about 1/20th the power you describe. -Randy
