I decided to upgrade the 3-pin fans in my C2550D4I FreeNAS server with some Noctua 4-pin PWM fans. I replaced all three fans, booted the box, and all three fans were spinning at 600 RPM. I assumed that the box was being smart (all fans are set to Smart Fan) but soon started getting emails about my system temps hitting critical levels.
I realized I was not running the newest BMC/BIOS, so I upgraded both. Now, the fans are stuck running at 2000 RPM, and never slow down, even with the CPU reporting temperatures of ~40C.
I've also noticed that in the BIOS the sensors have generaic names (e.g.: H/W Sensor1) all report N/A. Is there something wrong with my board? Is there a setting I missed? Is temperature reporting broken on this model?
BIOS:
I realized I was not running the newest BMC/BIOS, so I upgraded both. Now, the fans are stuck running at 2000 RPM, and never slow down, even with the CPU reporting temperatures of ~40C.
I've also noticed that in the BIOS the sensors have generaic names (e.g.: H/W Sensor1) all report N/A. Is there something wrong with my board? Is there a setting I missed? Is temperature reporting broken on this model?
BIOS:
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