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BBQigniter
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Dell PowerEdge 2650 noise - again ;o)

Yes, I've read now several FAQs, threads and advices about how to keep the noise level of a PE2650 low. But I didn't become really smarter. I did all the updates but still the server is simply too loud. My fans run at: 4740, 4740, 7140, 7200, 7320, 7380, 7320 RPM.

Is there really no chance to lower that RPM??? For me this doesn't seem as a smart tempurature regulation if the fans are always "near" full power.

 

My plan is now to replace the fans (no fear - I have no warrenty anymore ;)) with low-RPM fans but I saw in the sensors stats that the minimum limits are also very high. Is there somehow an option to reduce those limits? There are now fans with about 2200RPM (with 16db!) that get 30m³/h out of the case - and 7 of them I think would be enough to keep temperature at a normal level. Are there any people out there who have experience in changing fans in a PE2650? Does anybody have tipps? Is there some vendor where I can buy those fan-poweradapters? Every help appreciated - thank you in advance.

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BBQigniter
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Re: Dell PowerEdge 2650 noise - again ;o)

I have searched the internet again and found that the fan connectors are produced by MOLEX. The partnumber is 44133-400 from the Micro-Fit 3.0 product line.

 

What happens if I change the fans to low RPM fans and if they are running at 2200RPM? Will the server still power off if the temperature is ok or will the servermanagement only moan about the low RPM?

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BBQigniter
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Re: Dell PowerEdge 2650 noise - again ;o)

For everyone who wants to know. I now replaced all seven fans with some low 2200RPM ones. Server is running now with a nice volume. Only the fans of the powersources are the loudest ones now. Perhaps I'll change them later.

 

Temperatur is OK. At idle my two Xeons 3,06Ghz are now at 39-45°C (I calculate with a temperature at about 60-70 if there's something going on). Only the LCD Display moans about the fans because they are spinning so low that the sensors don't recognize them.

 

If the temperature will get too high I'll have to change to faster fans. Hopefully this will not happen 🙂

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DeafInBothEars
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Re: Dell PowerEdge 2650 noise - again ;o)

Thanks for the info. I am desperate to implement your solution on my 2650 I just picked up off ebay.


Can you tell me the part numbers for the 2200RPM fans you used?

 

Also, if you could recommend a supplier (preferably UK), then I would be greatly appreciative.

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BBQigniter
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Re: Dell PowerEdge 2650 noise - again ;o)

I'm useing SilenX iXtrema Pro 60x60x25 fans http://www.silenx.com/ixtremaprofans.asp?sku=ixp-34-16.

You would also need a Dremel or any other cutting tool because you have to cut some plastic so the fans fit (see http://www.tilt-lan.com/clemens/FAN3.jpg). And don't try to cut it with a calliper - the plastic will break - happened with my first fan ;). Perhaps you can find other silent fans where you don't need to cut something off. I would recommend you this method 😉 because it was really annoying. Next time I think I rather would take some stronger silent fans with about 3000RPM with about 35-40m³/h of airflow.

Besides I've choosen the simple method and onyl cut the wires of the old fans and soldered them together with the new ones so I could use the fan-power adapters.

 

As I said I will possibly soon also change my fans of the powersupplies. But here I'll use other fans. I'll post here again when I have done it.

 

Sorry, but I don't know a supplier from the UK because I'm from Austria 🙂

Message Edited by BBQigniter on 04-13-2008 04:56 AM
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BBQigniter
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Re: Dell PowerEdge 2650 noise - again ;o)

hmm, I today had temperatures about 75°C (while unzipping a huge file). So there should be used more powerfull silent fans. Opening the case had a huge factor and temperature was going down to about 55-60°C. I'm now thinking about to cut a hole with my Dremel and place a 12cm fan directly over the cpus or to let the case open and only "lay" the 12cm fan over them. 

 

with the open case and the 12cm fan my cpu temps are now 46°C and 33°C.

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DeafInBothEars
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Re: Dell PowerEdge 2650 noise - again ;o)

That sounds a bit warm.

 

The fan you suggested is a bit out of my price range - best price I can find is about £12, so buying 7 would make it too expensive.

 

I was thiking of this one:

 

AK-192BKT-B

 

It's around £5 and has temperature control.  Looks like it would be a bit louder when running full speed, but might had higher loads better.

 

What do you think?

 

Chris 

 

P.S.  Thanks for your tips so far and the photo! Smiley Happy

Message Edited by DeafInBothEars on 04-13-2008 07:56 AM
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BBQigniter
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Re: Dell PowerEdge 2650 noise - again ;o)

this one really looks fine you even don't have to cut anything away ;). They certainly will run at full speed after a while and with 4500RPM the sensors will possibly recognize them. I think those fans should do the work but only trying will show it :(.
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DeafInBothEars
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Re: Dell PowerEdge 2650 noise - again ;o)

Great! I just purchased 7 of the  AK-192BKT-B from these guys:
 
http://vebox.com/acatalog/Auto_Speed_Fans.html 
 
Total including postage just £36.  Hope they work!
 
 
So, just to clarify, i take it the I can recycle the existing connectors from my server? i.e. I do not need to buy the Molex parts you mentioned? 
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BBQigniter
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Re: Dell PowerEdge 2650 noise - again ;o)

Yes, I just cut the wires in half so if I would need the old fans for some reason I can easily solder them together again. You only have to watch to get the right wires together ;). With my fans it was a little bit nasty because they had all the same color.

 

Today I also had a quick view at the powersupply fans 10 minutes ago. There are also 60x60x25 fans used and they are really easy to change. You even don't have to cut wires or solder because they have the normal 3-pin connectors.

 

The order of the new PSfans is on the way to me - as soon I've changed them I'll give an update on my powersupply mod *g*

Message Edited by BBQigniter on 04-13-2008 01:52 PM
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