HP G5 DL380s Heat Problem? - Chicagoland Sportbikes
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post #1 of 6 (permalink) Old 05-18-2007, 02:38 PM Thread Starter
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HP G5 DL380s Heat Problem?

I just set up a Disaster Recovery Exchange environment for the company out here at the secondary HQ and I have 15 HP DL380s G5 servers all stacked on top of another. My boss is convinced that those things are too hot on the exhaust side and wants to space them out: 2 2U servers, skip a U than 2 more 2U servers skip, a U and so on. On the intake side there is cooled air from the Data Canter HVAC units @ 60*F but the exhaust of the servers is @ 116.2*F. I spoke to the Data Center manager out at the main HQ and he said it doesn't matter what the exhaust side temp is as long as you get fresh cold air on the intake side. I'm not willing to space them out till I am convinced that there is a real issue here. Does anyone have the G5s @ their Data Center and what temps are you seeing??

P.S. I have spacer panels blocking all the air from the back side so that only cold air can come in on the intake side.

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post #2 of 6 (permalink) Old 05-18-2007, 02:44 PM
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Technically he is right to a point. Leaving the air between then will definitely help if you have some hot racks and some cool racks as you are getting the wonderful layer of air insulation between them Otherwise the guy is nuts.

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post #3 of 6 (permalink) Old 05-18-2007, 02:52 PM Thread Starter
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Technically he is right to a point. Leaving the air between then will definitely help if you have some hot racks and some cool racks as you are getting the wonderful layer of air insulation between them Otherwise the guy is nuts.
I'm looking at it from the standpoint of server design; those things are designed to suck cold air in the front and blast out hot air out the back. Putting a gap in between them may only cause air leaks where warm/hot air starts sneaking to the intake side and now you are trying to cool your servers with warm air.

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post #4 of 6 (permalink) Old 05-18-2007, 02:56 PM
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If you have it partitioned off (hot/cold side) then I wouldn't worry about it.

It's removing heat from the unit like it's supposed to. They have temp alarms on them, right?

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post #5 of 6 (permalink) Old 05-18-2007, 02:59 PM Thread Starter
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Originally Posted by Arch View Post
If you have it partitioned off (hot/cold side) then I wouldn't worry about it.

It's removing heat from the unit like it's supposed to. They have temp alarms on them, right?
Yes, the Data Center has cold and hot aisles with server racks facing each other so no intake aisle is facing a exhaust aisle.

&

Yes. they do have temp alarms on them.

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post #6 of 6 (permalink) Old 05-18-2007, 03:12 PM
 
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You should be ok. Tell him to stand behind BLADE servers. Those things are like blast furnaces in back.
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