PWM Fan control

[Vertigo 7]

I have a supermicro x10 board, which i do like this board, but I despise the fan management.

I've dinked with the IPMItool and it doesn't do jack. I can reduce the fan speed for about half a second and then they're ramped back up again. I'm guessing supermicro has just decided that the fans need to be 100% and that's that.

Anyway... I'm wanting to use a USB PWM device and I'm looking for a recommendation for something I can use with TrueNAS and be able to set fan speeds based on temps so that my fans aren't running full tilt 24/7. Anyone have success with any particular device and accompanying software or script or something to manage it with TrueNAS?

If it matters, I'm on 12.0 U3.1

 

[MikeyG]

Have you tried setting fan mode to full speed in IPMI? If I remember correctly, the other settings automatically override manual settings. I have mine on full speed and manage with scripts, although they are x11 boards.

 

[Vertigo 7]

Have you tried setting fan mode to full speed in IPMI? If I remember correctly, the other settings automatically override manual settings. I have mine on full speed and manage with scripts, although they are x11 boards.

Yeah, I've tried. issuing raw commands to change the duty cycle, as I said, I can get the fans to momentarily spin down but within less than a second they're back up to full speed. I've set speed thresholds, I've done everything from any scrap of info I can find about the IPMI and PWM on the interwebs and nothing seems to make a difference.

 

[Vertigo 7]

you know what... I may have actually just figured something out I haven't tried with the IPMI... 2 things, actually.

1, I had some fans I moved around on different headers trying to figure this mess out. As a result, they were perpetually listed as non-recoverable 0 RPM in the IPMI. I reset the IPMI to factory default, made those go away but that also reset the thresholds I had played with.

2, I went back and setup my thresholds again. I noticed that after I made a change to a couple of them, the thinger would stop spinning down and up the fans and just run them at max... that is, until i reboot (reset) the IPMI and proceeded with the changes. So a few IPMI reboots later, all of the fans are in the green at 3-400 RPM while the system is idle.