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supermicro fans
ipmitool raw 0x30 0x45 0x00
The values are:
Standard: 0
Full: 1
Optimal: 2
Heavy IO: 4
I have no idea why they skipped "3"...
Here's where it gets more interesting:
This part is what I discovered from a post in the FreeNAS forum (reference below).
You can also set the PWM duty cycle for each of the fan zones. PWM values are set 64 steps using hex values from 00-FF (ox00 to 0x64). 0x00 is minimum speed, 0x64 is full speed, and 0x32 is 50%, etc. Each "zone" is set seperately using the following command:
ipmitool raw 0x30 0x70 0x66 0x01 0x<z> 0x<n>
- where "z" is the zone (0 0r 1)
- where "n" is the duty cycle (0x00..0x64)
Example: Set CPU zone (0) to 50%:
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