How To Replace Noisy Fans In Your Networking Equipment

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A short tutorial on how to replace noisy fans in your network equipment such as a switch. I used a QNAP QSW-M1208-8C and was able to replace the noisy factory fans with quieter Noctua fans. In this video, we will cover some things to be aware of and to look for before replacing your fans.

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but it has a much lower CFM too, monitor the temperature, as you may have a cooling deficiency. A normal fan has an average of 15CFM, the Noctua has 5.5CFM

wellingtonfreirerosa
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What about the power supply? I imagine it has fans. I replaced two 4 cm fans (one narrow, another wide) on my QNAP 8-bay NAS power supply with Noctuas. Those were noisy after having replaced the 2 12cm main fans also with Noctuas. Also, there is now an industrial version of this switch without fans and with DC power so that the power supply is external (qsw-im1200-8c)… what do you think?

fastmaxr
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It's really important to note that decibels are measured on a logarithmic scale. So for example, when you go from 50 db to 60 db, that 60 db isn't 20% louder ( ie 10 / 50 ), it's 10 times louder. I'll let you calculate what that works out to going from about 62 db down to 53 but, it's significant.

DavidM
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I opened a QSW-M408-C. It’s not a standard fan. It’s a blade connected to the heat sink. The fan itself is not loud. Instead it vibrates the case, which is plastic. All the noice comes from a combination of fan vibration and cheap case.

PhilipJMayo
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Has anyone done this and can comment how the temps were after the change? I know these have about 1/4 the airflow of the stock fans, does this cause temps to sometimes get to problematic levels?

aeroturner