BMC Firmware file – Dell Drivers and support.To modify the firmware you have to be on a Linux server, you can technically flash the modified firmware from windows server.You cannot flash the firmware using a VM (If you know a way please let us know).But if you are running a base OS like Redhat/CentOS/Ubuntu you should be good to go. Myself nor anyone involved will not be held responsible for any damages caused by proceeding with the firmware mod. This worked for many people including me.Intelligent Platform Management Interface, this tool set can be easily installed on any linux distribution and after you enable IPMI in the BIOS (DRAC interface) you can query sensory data from BMC and configure parameters on the BMC.BMC (board management controller) by design will ramp up the RPM of the fans every time you add more hardware to the system such as – Add-on cards, RAM, HDD’s, etc.Among many other things, fans are controlled by the BMC and the fan curve and all the values are baked in to the firmware.What is BMC (board management controller) Firmware mod – Lowering the BMC fan rpm thresholdsĪrnuschky figured out the exact setting in the BMC’s firmware, the check-sums etc to modify the fan rpm thresholds and wrote a very nifty script to help us modify the values on a downloaded firmware file. (Props to Caveman for coming up with this solution) I’m just going to put the summery of what I did. – Īpparently he had success with adding a 47ohm resistor in line to all 4 intake fans, he has a very comprehensive guide on the mod. I stumbled upon this post on the “Blind Caveman’s blog”. Fan MOD – Lower the Fan speeds to reduce the noise
I stress tested the server after the mod, check here for details – Dell PE 2950 Stress testĠ1. Firmware mod – Lowering the BMC fan rpm thresholds.Fan MOD – Lower the Fan speeds to reduce the noise.Reducing the noise involves two mods, hardware and firmware. Turns out Dell decided not to expose the BMC’s fan controller settings to the users. I have my lab setup in my room so I had to do something about this.Īfter wondering around in the OSMA, DRAC and BIOS with no luck, I turned to almighty Google for help.
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