How to adjust the fan thresholds of a Dell Power. Edge. Adjusted lower critical thresholds for the fans of a Power. Edge 2. 80. 0Note you MUST change your fans against slower, quieter ones to reduce the noise. The threshold adjustment discussed in this article only allows you to do so without new fans, its uselessIntro. In order to swap the fans on a Dell Power. Edge with slower, more quiet ones you have to adjust the lower critical threshold LCR. If you dont, the servers firmware actually lowers the fans speed under its own LCR, panics, spins them back up a 1. Very noisy, very annoying. Previous, related posts This behavior is controlled by the BMC, an embedded management controller. You can configure many parameters of the BMC using the IPMI protocol. Unfortunately, the BMCs firmware of a Dell Power. Edge does not allow to change the thresholds mentioned above. I contacted Dell support, and they refused to change the thresholds for such an old server. So I had no choice but to change them myself. It took me quite a while to isolate the proper setting in the BMCs firmware, the checksums etc. But I managed, and the servers running now very quiet with adjusted thresholds. Below, I explain how to adjust these thresholds with a python script I wrote. Note that youll need Python 2.
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November 2017
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