Want to move to all 208V for server racks

Sat Dec 4 04:10:38 UTC 2010

Your battery stack isn't like 12v either, unless it's one battery.

Joel's widget number 2

On Dec 3, 2010, at 20:02, Jima <nanog at jima.tk> wrote:

> On 12/3/2010 9:25 PM, Matthew Petach wrote:
>> (OK, so it's not as practical when you have other customers to worry
>> about... but it might not be so crazy when you're looking at the
>> efficiency numbers for 100,000 small 1u power supplies vs a set
>> of much larger ones.)
> 
> Particularly if you're running your AC power through UPSes -- especially online ones (where there's a constant AC-DC-AC conversion happening).  Go to DC for the batteries, never come back.  It's a tempting notion.
> 
>     Jima
> 