Supermicro IPMI Fan Speed Control - GPU System

[RCS]

Hi guys,

I'm having issues setting fan speeds on a 4027GR-TR Supermicro system.

System has 8 fans for both CPU/GPU/chassis cooling, and are controlled via the IPMI.

I've followed this guide from PigLover but it doesn't seem to work with this system.

https://forums.servethehome.com/index.php?resources/supermicro-x9-x10-x11-fan-speed-control.20/

I only have two default options for fan speeds: Optimal and Full.

I'm able to check what mode it's set to with the following command;

ipmitool raw 0x30 0x45 0x00

This outputs 01 or 02 (Full or Optimal).

But... When I try to set the fans to a specific duty cycle (40%, 50%, etc.) using the following command;

ipmitool raw 0x30 0x70 0x66 0x01 0x00 0x32

I get the following error;

Unable to send RAW command (channel=0x0 netfn=0x30 lun=0x0 cmd=0x70 rsp=0xcc): Invalid data field in request

I've tried different variations of the same command, and all of them spit out the same error message.

I don't think this system has different fan zones (Zone 1 for CPU, Zone 2 for peripherals, etc.) as all the 8 fans in the system are designed to cool everything. I'm thinking this may have something to do with why it's not working.

Any ideas?

Thanks!

 

[RCS]

Update. Did some more reading and found some commands that work on this board. Maybe its an X9 generation thing?

System seems to have 4 zones. One for each fan pair.

The following code works after setting the fan mode to "Full".

#set fans in "Zone 1" to 30%
#ipmitool raw 0x30 0x91 0x5A 0x3 0x10 0x4D
#set fans in "Zone 2" to 30%
#ipmitool raw 0x30 0x91 0x5A 0x3 0x11 0x4D
#set fans in "Zone 3" to 30%
#ipmitool raw 0x30 0x91 0x5A 0x3 0x12 0x4D
#set fans in "Zone 4" to 30%
#ipmitool raw 0x30 0x91 0x5A 0x3 0x13 0x4D

The "0x4D" at the end is the fan speed setting for each individual zone. Range is 0-255 (in decimal format)

Hope this helps someone else in the future!

Thanks.