[Cialug] [omaha] Google Datacenters

[Aaron Porter]

On Fri, Apr 10, 2009 at 8:49 AM,  <jrnosee at gmail.com> wrote:
> I've often wondered if it would be possible to convert AC to 12VDC for the
> entire datacenter then run 12V lines to each server and only have a DC->DC
> 12V/5V/3.3V Point of Load power supply do the conversion.  Thus eliminating
> power loss in the multiple AC-DC conversions and running all the extra power
> supply fans, etc.

Rackable in particular do a brisk business in this config space --
they put the big-ass inverter well outside of the datacenter to
"diversify" your heat load. They look sexy, and most gear these days
at least has some sort of DC option (Cisco, Juniper, Force10, etc) but
it does make "greybox" configs a lot harder.