1650 power consumption.

Philip Rowlands phr at doc.ic.ac.uk
Tue Jan 14 07:42:00 CST 2003


On Tue, 14 Jan 2003, jason andrade wrote:

>> The power supplies are 1+1, i.e. you have one "hot" and one spare. They
>> will not both draw full current at the same time.
>
>have you checked this with both supplies in your measurements ?

No.

>i have been informed by dell thatthe power supplies are indeed "live"
>(i.e equal draw from each) and from what i can see in our testing with
>UPSes both PSes are indeed drawing power.  they don't draw full power
>but they certainly draw a bit more than 50% each at the same time (i.e
>it appears to be a "load balancing" type scenario)

I'm sure you're right. I was guessing that the power consumption cannot
increase by much when adding a second PSU; the only increase is the
overhead of another transformer. It makes sense I suppose to load-share;
you wouldn't want the "A" feed taking all the heat for 20 servers.


Cheers,

Phil




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