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Forum Discussion
Readynas 316 fan push or pull?
The fan in my 316 is getting noisy, so I am going to throw in a Be Quiet! Silent Wings 2 PWM fan I have laying around. Is the stock fan pushing or pulling? And which would be better? I'm thinking pus...
So I went ahead and replaced it the other day, in pull configuration. I noted that the board at the back would pretty much block all air flow to the drives if it were to push air in.
I tried beforehand putting my hand to it to check, but the airflow was pretty minimal, and I've felt fans that had some air flowing out when they are pushing air in, so I wasn't quite sure when I did that.
I looked up the specs on the stock fan using the part number on it, and found that it flows in the low 20CFM area, the Silent Wings 2 PWM 120mm fan is 50CFM at 16.5 DBa, 1500RPM. I didn't pay attention to the speed of the stock fan, but with the air flow rate of both, that is irrelevant.
The thermal design is to pull the air out of the system.
The fresh air will come in from the vent of front door.
You can't push air in from the back. It will violate the thermal design flow.
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