[Beowulf] longevity of 1U servers?
tjrc at sanger.ac.uk
Mon Feb 9 23:55:44 PST 2009
On 10 Feb 2009, at 12:10 am, Bill Broadley wrote:
> Seems like fans are the main problem with 1Us. Pretty much
> efficiency (air
> moved per watt) and noise (air moved per decibel) hugely favor
> larger fans.
> I've seen 1U nodes that waste 30+ watts or so on moving air.
> Seems like a rear door with a few 18" diameter fans could easily
> move more air
> than 40 1U systems with 240 1" fans in them. Seems like large
> savings in
> power and expense could be had by moving the fans to the rack
> doors. I've
> seen blade servers basically do this, alas at a large cost premium.
Exactly. Consider the enormous blowers in an IBM BladeCenter chassis,
there are only two fans for fourteen machines.
Blade servers do save money elsewhere; *generally* they're much
easier to deploy and administer than individual pizza boxes.
At least, they are when the lights out management firmware isn't an
unspeakable crock. Ahem.
The Wellcome Trust Sanger Institute is operated by Genome Research
Limited, a charity registered in England with number 1021457 and a
company registered in England with number 2742969, whose registered
office is 215 Euston Road, London, NW1 2BE.
More information about the Beowulf