Soo I had some Noctua 120mm 3-pin fans on the case and it ran them at 100% at all times. So I went and got some pwm noctua 4-pin fans and it works. However they spin lower than the thresholds of the allowed in the mobo. Now I have used ipmitool in ubuntu to adjust this same issue on my other supermicro board with the same 4-pin fans and no issues at all.

 

For some reason this time instead of changing it to what I say. It changes all the power level is over 9000..(65025).  any ideas?

 

The motherboard is X8DTL-iF 

the same issue for me too some time ago, and fix is very simple - when you set value 150, it multiples it by 150 and you get 22500

if you wanna 150, use 12. 12x12=144

enjoy!

Edited May 26, 20179 yr by uldise

well that fixed that but im still getting a pulsing from the fans and its not even that hot...

 

Logs is empty and everything on the web portion is showing green

i have the same generation SM board, two CPU's, six fans too. system temp for me is about 37 C on idle system, with ambient room temp about 22. (server is located in a small chamber with very limited airflow, no another options at the moment...)

are your temps from idle server or on heavy load? your DIMMs temp differs each other a lot, mine are nearly equal within the same CPU(differ max 1-2 degrees).

are your fan directions correct? all fans must pump air from case front toward rear.. 

Server is idle.

Server case RSV-L4500

All fans are moving from front to back.

2 - cpu heatsink fans. fans 1-2

3 - 120mm in front - fan 3

3 - 120mm in middle - fan 4

2 - 80mm in back - fans 5

 

Edited May 29, 20179 yr by demonmaestro

what fans are you using? are they 3pin or 4pin? i'm on 3 middle 3 pin, CPUs and rear are 4pin PMW. 

i'm on Norcotek 4224 Case, three 120mm fans in the middle, one for each CPU, and one 120mm on rear mount from outside a case..

 

you have 10 fans in total, how are you connecting them to MB? mine have 8 fan connection only..

i'm wondering why you need so much fans..

I am using the Noctua NF-F12 PWM 4pin fans. I am using a 3 to 1 fan splitter.

 

The fans at max barely draw that many amps and the motherboard can handle the amps per fan header.

 

When the fans are at "normal" speed the whole thing is silent.

 

As far as many fans. The idea was to move a lot of air quietly to keep it cool.

Edited May 29, 20179 yr by demonmaestro

3 minutes ago, demonmaestro said:

As far as many fans. The idea was to move a lot of air quietly to keep it cool.

you can always make an experiment and disconnect some and look at the system how it works..

I really don't want to pull that beast back out again.

 

In the picture the server is turned off.

Edited May 29, 20179 yr by demonmaestro

nice pictures!

looks like your server are in the corner, what are the ambient temp in the room? 

 

btw, what switches are you using?

Well when i was testing the server and setting it all up. With the lid off the server it hovered about 25c.

 

The ambient temp in the room stays generally around 24c-25c. With an overhead ceiling fan.

 

Here is the temps for the smaller 2u server. I have 3-80mm Noctua NF-A8 PWM and then I have a 60mm Noctua 60x25mm PWM sitting on top of the cpu.

The motherboard is a SuperMicro MBD-A1SRi-2758F-O

 

I don't have any surging from the 2u server.

 

The top switch is a Ubiquiti Unifi us-16-xg (10GB switch) and the bottom switch is a Ubiquiti Unifi us-24. 

19 minutes ago, demonmaestro said:

 

Well when i was testing the server and setting it all up. With the lid off the server it hovered about 25c.

 

then something is wrong with airflow direction i think..

your another server looks much better, cos it's 2U with more limited room for airflow..

 

according 16-XG, how it's performing? any issues? are you using Fiber or DAC's?

i'm in process of looking for 10G switch....

I'm using DACs but so far the only issue is its kinda noisy for my liking considering me trying to use the Noctua fans on everything.

 

When looking at the hdd temps they are nice and cool....

 

 

yes, mine hdd's temps are about the same..

attached a pic for my server temps for last 12h.. you can see, one CPU vent is fluctuating a bit.. 

it did it much more when fan was mounted in direction not to front to rear but from right to left.. 

 

I can only do front to rear with this case... Well I mean I can do rear to font but that defeats the purpose of a server case..

Just now, demonmaestro said:

I can only do front to rear with this case... Well I mean I can do rear to font but that defeats the purpose of a server case..

no, just do it from front to rear, this is by design..

your rack is in the corner, right? are there enough space in the back to allow hot air to flow out from your server?

There is about a foot of space behind the server

Just now, demonmaestro said:

There is about a foot of space behind the server

then i'm out of ideas what else to check... 

I've been having issues with this server since I started this server move. First it was with the CPUs and motherboard. Come to find out that is was a bent CPU pin. 

Then I had the Noctua 3pin - 120mm fans and the motherboard caused them to run at 100% at all times.

Then with the 4-pin Noctua fans it was surging kinda like this but the adjustment to the fan speeds fixed that. (see top of post).

And then now this.. 

 

One thing after another on this server move...

 

The only other thing I am thinking about doing is putting the low noise adapters on. But that will hurt it when the server is under load.

Edited May 30, 20179 yr by demonmaestro

Here is something interesting I just found out. I had started the array in unraid and all fans went to 100% and all its doing in a parity check. cpu load is at 2%-3%...

Hi, I'm using Noctua NF-P12 PWM fan, 120 mm, 1,300 RPM.  My motherboard is Supermicro X9SCM-F motherboard.  Seems like my fan is going up and down.  I read about this and people are saying it's the threshold problem, sensors thought it's going below threshold, then revving it to the max, then back and forth.

 

I tried to install IPMI tools, but it doesn't support Supermicro Fan control.  How do you guys control the fan?  Are there any plugins that work with Supermicro?

32 minutes ago, jang430 said:

Hi, I'm using Noctua NF-P12 PWM fan, 120 mm, 1,300 RPM.  My motherboard is Supermicro X9SCM-F motherboard.  Seems like my fan is going up and down.  I read about this and people are saying it's the threshold problem, sensors thought it's going below threshold, then revving it to the max, then back and forth.

 

I tried to install IPMI tools, but it doesn't support Supermicro Fan control.  How do you guys control the fan?  Are there any plugins that work with Supermicro?

I used this guide https://calvin.me/quick-how-to-decrease-ipmi-fan-threshold/

Thank you, but how do you do this in Unraid?  I don't have a separate Ubuntu desktop/ VM lying around.  Another member pointed out that I can use the same IPMI tools, and still use it to edit my fan thresholds, just not automatically.  Would you happen to know how?  I believe this is the IPMI Tool being mentioned- 

 

 

Well spin up an ubuntu vm. Also you might be able to do it with a "live" ubuntu version via usb stick

I have found that cycling fans can be caused by overheating north bridge while running with dual processors. Putting a small (or 120mm in my case, x8dtl-if ) fan blowing directly on the nb heatsink immediately cured the problem and speed cycling stopped. I had 75°C on the nb with fan only ~30°C measured with ir gun.