RE: Data Center Facility Costs

"opening the doors" to cool the NOC is a nice idea, but it really
doesn't work in practice.  Here in the great white north we often have
-20F temperatures, which you think would be great for cooling rooms, but
in reality it turns out that to use outside air you actually would have
to de-humidfy, heat and then re-humidify the air before you let it blow
on your servers.  In practice letting your HVAC take care of it is
really a less troublesome and less costly option for a small to
mid-sized NOC.  I have often wondered about having a long tin tunnel on
the roof to duct air through to pre-cool it without opening the
environment, but not being an HVAC engineer I am sure there are reasons
beyond my ken why they don't do that.  

If you were just cooling people then bleeding and mixing outside air to
lower room temperature would work, but people are a lot more forgiving
than electronics, which worry about things like static and condensation
and environment stability.  

 

> -----Original Message-----
> From: [email protected] 
> [mailto:[email protected]] On Behalf Of Jeff Koch
> Sent: Tuesday, March 04, 2008 9:13 AM
> To: [email protected]
> Subject: Re: Data Center Facility Costs
> 
> 
> I changed the title a little to reflect the changed 
> conversation about the cost of running a data center.
> 
> Anyway, are there parts of the country where the cost of 
> running a data center are substantially cheaper? Maybe where 
> the cost of power is 3 cents per KW or maybe where the 
> climate is cooler and you can just open the doors 
> (figuratively speaking) to cool the servers. Since 
> electricity seems to be the greatest operating cost where's 
> the best place to locate a DC?
> 
> 
> 
> At 06:43 AM 3/4/2008, you wrote:
> >joe mcguckin wrote:
> >
> >>I don't think it costs $276 to reject the heat. Most modern HVAC 
> >>systems have something like a 4:1 effeciency factor, so it probably 
> >>really costs something like $70 for cooling...
> >
> >Check the archives of NANOG42 (you're on the attendee list 
> too...) and 
> >you'll see someone (multiple people?) quote the figures I used.  I 
> >recently attended a cooling seminar (thanks Digital Realty 
> Trust!) and 
> >they quoted a facility that had metered their "stuff" and 
> were stunned 
> >by the results.
> >
> >Note that I lumped things together as "infrastructure", not 
> just direct 
> >cooling.
> >
> >pt
> >
> >--
> >Eat sushi frequently. - Avi
> >[email protected] is the human contact address.
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> 
> Best Regards,
> 
> Jeff Koch, Intersessions 
> 
> --
> Eat sushi frequently. - Avi
> [email protected] is the human contact address.
> [email protected] is the list posting address.
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> 
-- 
Eat sushi frequently. - Avi
[email protected] is the human contact address.
[email protected] is the list posting address.
See below URL for subscribe/unsubscribe and list options:
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