RE: System power question

IBM support's position was that the power consumption is virtually the same
in both states (busy and restricted). He guessed maybe a 5% difference
between the two (if that).




ChadB@wheeling-ni
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RE: System power question

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To clarify - this is the EXACT same machine... just in restricted state as
opposed to running an active workload.





"Chris Bipes"
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12/15/2008 04:44 Subject
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Even in a restricted state, all the disk drives are spinning so I would
expect to see the same power draw. That is if they have the same IOP's,
IOA's and disk drives. If the CPU is in a slower / lower power state, I
doubt that would make enough of a difference to worry about.




Chris Bipes
Director of Information Services
CrossCheck, Inc.


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Subject: System power question



OK... this is a strange question...


Picture an i5 system (a 3800 cpw 525) that is powered on and humming
away as it processes work to support Mimix replication, a Domino server,
and a WAS/HTTP server.

Now picture that same i5 system (a 3800cpw 525) that is powered on and
sitting in restricted state.


Now here's the question... are they consuming approximately the same
amount of electrical power from the circuit (conditioned by the UPS, of
course)?
If there is a difference in the electrical power being drawn, is it a
significant difference? I'm looking to get a handle on this question...
I can make a guess, but i'd like to hear from someone who is certain of
the answer!
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