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Forum Discussion
RN214 Fan Question
Hello All,
I see questions here about fans and noise, etc.
I am not as worried about those issues as the NAS hides in the basement next to the switch.
The question I have is can the voltage be upped to the fan? Again, I'm not concerned with noise, but would like the best cooling possible. On the "Cool" setting the fan "idles" at about 1100 RPM and hits 1900 RPM when the thing is moving a lot of files. I checked the voltage and it was about 8.5v. When bench tested at 12v, the fan is much faster and moves quite a bit of air while spinning at about 2800RPM.
I'm good with faster fan speeds, but suspect the system just sends assorted voltages to the fan from a bus that might be lower than 12v. I wonder what the base voltage is and if it is adjustable.
Also, would reversing the fan in the case help with cooling? As is, it creates a vacuum in the case, which isn't the optimum setup for cooling. Would turning it around and creating a pressurized environment work better?
I can do this, but an curious if anyone else has been down this road and had any input.
I'm running 4 10TB HGST 7200 RPM drives. Day to day, the outside drives are at about 39 degrees, the inside 2 are about 35 degrees. Not bad, but anything cooler is better long term.
TIA,
Mark
2 Replies
Unless you have the front of your NAS improperly blocked, the fan does not create a "vacuum". Fans are rated for both forward and backward pressure, and chasses are designed with a specific airflow. Changing the direction of the fan will change both of those, and likely result in less cooling, not more, as it will blow directly on the SATA backplane.
You can tweak the max and min fan speed settings, but unless your drives or CPU are getting really hot (so something is wrong), I suspect you are worried about nothing. The NAS and drives are designed to work over a very large range of temperatures with no degradation. I suspect it's rather cool in your basement, which is why the fan runs slow -- it's simply unnecessary to run it any faster.
MarkMills wrote:
I'm running 4 10TB HGST 7200 RPM drives. Day to day, the outside drives are at about 39 degrees, the inside 2 are about 35 degrees.This is a completely normal temp range, so not something I'd be worried about.
My own NAS drives (10 TB WD Plus) are running between 35-44C at the moment, with the NAS cooling set to "balanced". The outlier (44C) is air-filled, the others are helium, and I suspect the air-filled model might be designed to run a bit hotter. It also is in a basement.
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