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From: Michael Powell <nightrecon@hotmail.com>
Subject: Re: OT: UPS for FreeBSD
Date: Sat, 29 Nov 2014 01:04:54 -0500
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Jon Radel wrote:

> On 11/28/14, 8:26 PM, Michael Sierchio wrote:
>> I've always found it amazingly absurd that you use a UPS (a bank of
>> batteries charged by AC->DC conversion), invert it back to AC, which gets
>> converted to DC for the motherboard and peripherals.
>>
>> But that's just me, probably.
> 
> Hardly.  See
> http://hightech.lbl.gov/dc-powering/
> https://gigaom.com/2012/01/13/the-next-big-thing-for-data-centers-dc-power/
> etc.  It's not storming the world, but some are doing it.


Google's been doing it for years:

http://www.cnet.com/news/google-uncloaks-once-secret-server-10209580/

-Mike