Re: DATACENTER: Cooling and Cost Data for Web Hosting Data Centers

[hannigan@fugawi.net]

> 
> On Thu, 9 Dec 1999, Ken Woods wrote:
> > > I'm not even gonna start.
> > Actually, now that I've had a few mins to wake up, I've changed my mind.
> > > On Thu, 9 Dec 1999, scott w wrote:
> > > > helps.  Got my flame-proof panties on just in case...  ;-)
> > ewww....
> > mental image.
> 
> Yep 8-)
> 
> > > > 1.add up the total DC wattage
> > 
> > 1. Why are you using DC?
> > Are you building a switch facility, or a colo/web hosting facility?
> > Most of "us" are building colo/hosting.  DC is evil.
> 
> No I don't use DC.  We've got colo, etc. When you said something along
> tthe lines of 8Amps = 1 VAR, I figured it was DC.  Otherwise it'd be 8A
> rms, yes?

What about telephony colo though? Carrier stuff is almost always DC.

> > > > 2.divide total DC Watts by 0.7 (1 divided by the square root of 2 ~= .7)
> 
> Thanks for your response Ken!  I can easily see you're well versed in the
> EE stuff.  I was mainly aiming at some of the datacenter mailing list
> guys. I felt that if some saw a DC watts to complex power conversion, I
> might be able to explain a little deeper that the 2 are not the same.  
> I'll leave the thread to you...  :-)


On the AC side, We averaged out our Boston facility at 20A/AC per rack
equivelant <covers, rooms, cages, racks, cabinets>

I think I may have just spanked myself. Oww.

-M