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Proliant ML370G1 fan noise

 
Giuliano_8
Advisor

Proliant ML370G1 fan noise

I installed the HP Advanced System Management Controller Driver for Windows 2003 and my fan noise in 50% less but i can't seem to control it, is it possible to control the fan speed?

i have a Proliant ML370G1 866mhz model
13 REPLIES
Nathan Gervais
Trusted Contributor

Re: Proliant ML370G1 fan noise

Fan speed is not controllable. The driver will only go up or down based on the temperature sensors in the server
chuyongho
Advisor

Re: Proliant ML370G1 fan noise

hi
It's really fan problem(hardware problem).
I suggest to change fan ( cpu fan and i/o fan)
fan speed is controlled system management driver and system bios.
but fan noise is different problem.
JP Steeghs
Occasional Advisor

Re: Proliant ML370G1 fan noise

Hi Giuliano,
Sorry for the delay, I had to check some alternatives for you, before replying.
So, in answer to your question here, and your reply to my thread 'on noisy Proliant fans', here they are:

I. The first alternative is as I described in an earlier forum-thread. This one has a setup of two fans:
(A) is a new small, low-noise, processor-fan directly attached to the heatsink of the processor; these fans usually come with a 3-pin connector:
A1: yellow (moderating signal)
A2: red (power DC +)
A3: black (ground, power DC -)
(B) is the original Proliant fan for the plug-in card section, with 3-pin wiring:
B1: white (moderating signal)
B2: red (power, DC +)
B3: black (ground, DC -)
There are two 5-pin connectors on the mainboard, (C) for CPU-fan & (D) for cards-fan, from top to bottom:
C1: white (signals the notorious '1611 fan failure')
C2: empty/not connected
C3: red (power, DC +)
C4: black, connected to C5 (double ground, signals the presence of the fan)
C5: black (ground, DC -)
and
D1: black (ground, DC -)
D2: black, connected to D1 (double ground, signals the presence of the fan)
D3: red (power, DC +)
D4: empty/not connected
D5: white (signals the notorious '1611 fan failure')
OK, now connect: A2-C3, A3-C5, C4-C5, B1-D5, B2-D3, B3-D1, D2-D1 and C1-D5. Both fans will work, without any error messages.

II. Scenario two has two original Proliant fans, but now the card fan (B) is disconnected, so you only have the noise of the CPU fan (A), which you may regulate then with the HP management tools. (A) in this example has the same 3-pin wiring as (B) in the first example. The (B) from the first example is not connected at all.
In this scenario, connect: A1-C1, A2-C3, A3-C5, C4-C5, D1-D2, D5-C1. It works with me, one working CPU-fan, a disconnected cards-fan, and no error messages ...

III. Scenario three is the one I'm using myself now; since I don't really need the fan for the plug-in card compartment (they don't overheat that easily), I disabled it and replaced the CPU-fan with a silent one. So this setup has only one fan (A): a new, low noise, CPU-fan directly attached to the heatsink of the processor (with 3-pin wiring as in (A) in the first example), and no card fan.
In this scenario, connect: A1-C1, A2-C3, A3-C5, C4-C5, D1-D2, D1-A1, D5-A1.
So, basically you have DC connected, plus the double ground on both mainboard connectors, _and_ the A1-C1-D5-D1 connection. The D1 may seem strange here, but somehow this fan failure thing has something to do with the grounding of the fan-on-heatsink, I found out. Anyway, it works fine with me: appropriate and low-noise cooling of the CPU, and no error messages.
Hope this helps you out a little ...
Bye, and good luck, JP
Giuliano_8
Advisor

Re: Proliant ML370G1 fan noise

Dear JP, Scenario three sounds great to me, can you please give me soms more details on how to connect my ONE 80mm fan to the mainboard

excuses me but i am not that technical hehe...

Giuliano
Giuliano_8
Advisor

Re: Proliant ML370G1 fan noise

i think i have it up and running, i connected the 3rd option you mentioned, and it seems to work, wow it's so quiet now!!! thx

Giuliano
Giuliano_8
Advisor

Re: Proliant ML370G1 fan noise

hey JP, can you help me again my another type of ML370G2 ?

greetings
David Claypool
Honored Contributor

Re: Proliant ML370G1 fan noise

Please be aware that modifications such as described above will void any warranty and may severely decrease the operating life of the unit.
JP Steeghs
Occasional Advisor

Re: Proliant ML370G1 fan noise

Hi Giuliano,
Sorry for the delay, just cleaned up my desk and recovered my user-id & password :)
Can't help you with the wiring of the G2; since I never saw one from the inside, I don't know how it looks like. If you can describe to me how the wiring of the fans to the mainboard is, I might give it a shot ...
And David, I don't believe these older models have any warranty anyway, so no need to get high and mighty, we're just trying to help out one another in a very practical way. Besides, I have my 370-G1 up and running in the above configuration as a webserver for many months now, and no problem there ...
Bye, JP
Giuliano_8
Advisor

Re: Proliant ML370G1 fan noise

i don't know exactly how it's wiring are, the type of system board seemd more intellegent, it uses 3 hotswap fans, one for the pci cards and 2 for it's microprocessors... i will see if i can send you a picture or layout of the mainboard...

Giuliano_8
Advisor

Re: Proliant ML370G1 fan noise

JP, ik did succeed in soldering the jellow signal wire from 2 fans the a another fan so 2 fans are now disabled, i'm running 1 fan now but it;s still bit to loud... i will keep you informed
JP Steeghs
Occasional Advisor

Re: Proliant ML370G1 fan noise

Hi Giuliano,
Here's the location of ML370 G2 general overview page:
http://h20000.www2.hp.com/bizsupport/TechSupport/Home.jsp?lang=en&cc=us&prodTypeId=15351&prodSeriesId=316593
and here's the location of the overview page of all ML370 G2 manuals:
http://h20000.www2.hp.com/bizsupport/TechSupport/DocumentIndex.jsp?contentType=SupportManual〈=en&cc=us&docIndexId=179911&taskId=101&prodTypeId=15351&prodSeriesId=316593
The 'Server setup & installation guide' is located at:
http://h20000.www2.hp.com/bc/docs/support/UCR/SupportManual/TPM_203510-001/TPM_203510-001.pdf
Chapter of this manual contains a picture of the connection of the bundled wires of the three hot-plug fans to the mainboard. Check out how many wires (and wich colours) come out of this mainboardconnector and how the wires are distributed to the 'plugs' to which the 3 fans are connected. It is very likely that there's 12 to 15 wires, neatly distributed in 4-5 wires to each 'plug', or maybe the two processor-fan 'plugs' have a joint power supply, in that case there's probably 8-10 wires distributed two ways to the 'plugs'. My guess is that it works the same way as with the G1, only now with a somewhat more sofisticated design.
Also check on _how_ these wires are connected to the 'plugs': are they soldered, or do they have connectors?
Because of the design it is a little harder to experiment with the wiring.
If the 'plugs' have connectors, it's more easy, you can then extend the connector by new wires and connectors.
If the wires are soldered to the 'plugs', it's a little bit tricky, you have to be very, very cautious with cutting wires ... :)
Bye & take care, JP
JP Steeghs
Occasional Advisor

Re: Proliant ML370G1 fan noise

Hi G.,
The second link doesn't seem to work, but you can get there through the first one ...
Bye, JP
Jon Ward
Trusted Contributor

Re: Proliant ML370G1 fan noise


Note that tampering with the fans from the manufacturer specification may increase the chances of abnormal shutdowns due to thermal failures. There is a reason why the fans are there.

That being said, there might be a way of indirectly reducing fan speeds by reducing the load of the server. For instance, if you have two processors, you can reduce the server's overall temperature by reducing it to one. The same applies to hard drives, memory, expansion boards, etc. The cover should be seated at any time, as it interfers with the air flow. Empty hard drive slots should be covered. And if mounted in a rack, there should be mesh doors (holes allowing air to be suctioned in).

It is possible for fans to be unnormally loud if there is a ball baring problem with one of the fans. However, it would be much louder than that of any other server product, not just incrementally.