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Microserver Gen8 chassis fan upgrade.


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1 hour ago, RobWu said:

almost noise-less

Can't quite imagine noiseless microserver stock fan setup. My microserver sounds like jet engine with the stock fan and I don't know the way to make it sound not so loud.


How could you acheive this result?

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Nothing really. It was always very quiet, only had the 'chirping crisis' just once.
It is only very loud when I restart the server, but as soon as the boot sequence is finished, the fan throttles down to low noise levels.

Sorry, but that's it. I just recall a driver pack, or update pack, for the server once had the fan running faster than normal. But that was fixed quite quickly. No idea how, when or where to find this atm. ;)
Maybe a search on the forum might help out.


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54 minutes ago, RobWu said:

It was always very quiet

What CPU and RAID controller (and if b120i, what mode, AHCI or RAID) do you use?


I've got E3-1260L and P222 PCIE RAID that affects heat and fan speed for sure.

Edited by Gulftown
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1 hour ago, RobWu said:

G1610T & b120i in RAID mode

Celeron produces not so much heat and b120i also known to increase fan speed in AHCI mode but be ok in RAID mode.


One day you still need to be ready for fan replacement...

Edited by Gulftown
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  • 4 weeks later...

I ended up buying a HP fan with the 6 pin connector, just to cut the connector off and solder it onto a 4 pin PWN fan as per SilentPCReview.

Made a world of difference without worrying about creating a controller.

Has been running for many years without fault.

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11 hours ago, fury said:

I ended up buying a HP fan with the 6 pin connector, just to cut the connector off and solder it onto a 4 pin PWN fan as per SilentPCReview.

Made a world of difference without worrying about creating a controller.

Has been running for many years without fault.

In fact, Mihai's scheme is really bad as Microserver is going into loop RD lock detection. If you open the SPC link you will be able to clearly read the datasheet prohibition to do so ).
I would like to find some time to make some measurements with oscilloscope before putting everything together. But if you think I slould hurry I can create a topic with all the information I found regarding this topic.

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It's a Noctua 120mm fan - NFP12

Looks like it's not PWM but is only 1200RPM and quiet running flat out.

Now I think about it that may have been why i used it.

I recall I chose this as it had higher static pressure which is good when using it with a radiator.

I think I recall I tried an EK Vardar fan as well but the result was too noisy.


Note i sit less than 1mtr from my microserver.

Edited by fury
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On 2/21/2020 at 2:52 PM, fury said:

Looks like it's not PWM but is only 1200RPM and quiet running flat out.

Non-PWM version of NF-P12 is 1300RPM, 92,3 m³/h,  19,8 dB(A), 1,68 mm H₂O. Does it really have 3-pin connector, not 4?


I would like to test a new Redux PWM version. What seems to be really important to me is low power consumption (that affects all bew fans) as I can use more fans using the same power line.


I wanted to implement possibility to add CPU, RAID cooling  as well. The good thing is Delta AFB1212SH(-R00 RD-lock version actually that is the thing I was telling you about the problem with mihai's solution... it will work but in the state of rotation lock detection just waiting for some time to sound the alarm and having not ehough time for that) consumes 0.8A while your fan needs only 0.09A to operate. As for Redux generation 0.05A will be enough so you can power 10 fans using the same connector. 😀


On 2/18/2020 at 1:32 AM, fury said:

I ended up buying a HP fan with the 6 pin connector, just to cut the connector off and solder it onto a 4 pin PWN fan as per SilentPCReview.

As far as I understand you have spent a huge amount of money to buy a separate connector so in case of failure you can still use the old one. I didn't accept this solution as you get a no good implementation of RD for high cost.
But to make it work MCU-controlled you have to make a LOT of research and measurements (I had to use "some" specification whitepapers and I don't still know how to make my board work with your 3-pin type of fan due to PWM-TACH signal distortion). I think I have to finally make it done and place everything I found on the topic to this forum.

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