Still a lot less than rack after rack of Windows servers, so who cares?!

Guy Gardoit
z/OS Systems Programming

On Thu, Apr 30, 2009 at 3:10 AM, R.S. <r.skoru...@bremultibank.com.pl>wrote:

> Hal Merritt pisze:
>
>> I seem to recall a variable is the ambient temperature. That is, the z/10
>> blowers may consume more power in a warm room than an equivalent z/9.
>> Could this be a factor?
>>
>
> No, it couldn't My observation was done when two machines were in the same
> room, very close one to other.
>
>
> Current ratings:
> z9
> Total System power consumption: 3.283 kW (KVA), 11202 BTU/hr
> Air input temperature: 18.2 °C, 64.8 °F
>
> z10
> Total System power consumption: 5.918 kW (kVA); 20193 BTU/hr
> Air input temperature: 25.3 °C; 77.5 °F
>
>
> As you can see the difference is even bigger. However air temp is lower for
> z9 (now it's in another location).
> z9 powered up, LPARs are activated, but no OS is IPLed, however this should
> not affect power consumption at all. AFAIR I've checked it in the past.
>
> Of course the tube at the front of z10 is still much greener <vbg>
>
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> Radoslaw Skorupka
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>
>
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