Semi-OT 220v power in the home

[James Knott]

John Van Ostrand wrote:
> On Fri, 2007-01-19 at 15:04 -0500, James Knott wrote:
>   
>> According to what I read recently, IBM has a blade server that runs 
>> about 40 KW per cabinet!!!
>>     
>
> To defend the IBM blades they boast lower power than 1Us and many other
> blades. It's the density that pushes the cabinet above data center
> norms. You can fit 84 blades in a cabinet which is comprised of 168
> CPUs, (336 cores,) 168 SCSI hard disks, 24 Ethernet, Infiniband and/or
> SAN switches, and 12 management modules with KVM over IP. 
>
> That's quite a bit of gear for 40KW and considering that it's probably
> peak consumption, it could commonly run on less. Also that figure may
> take into consideration the redundant power supplies. The system may
> only need 20KW to function and have the other 20KW as redundant power.
>
>   
Though I can't say for certain, I believe that's actual operating 
power.  They were discussing it in terms of the strains put on power and 
air conditioning systems.  Apparently, for each watt of power used, you 
have to use another 1.25 - 1.5 W for cooling, so one of those cabinets 
could run you about 100 KW total!


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