want to manually control your fan speeds to limit noise?
super simple. here’s how.
pre-req: go into idrac > network > scroll down > enable ipmi > save
if you’re a windows guy, grab this: https://www.dell.com/support/home/en-us/drivers/driversdetails?driverid=m63f3, then follow commands below
if you’re a linux guy, install this: sudo apt install ipmitool
then:
ipmitool -I lanplus -H YOUR_IDRAC_IP -U root -P calvin raw 0x30 0x30 0x01 0x00
ipmitool -I lanplus -H YOUR_IDRAC_IP -U root -P calvin raw 0x30 0x30 0x02 0xFF VALUE
replace YOUR_IDRAC_IP with, well, your iDrac IP and VALUE with the hexadecimal below. from 0% to 100% fan speed. i leave mine at 50% and it temps remain stable even when running llms on my p40.
the first commands installs ipmitool. the second sets the fans to be manually controlled. the third command sets the fan speed in terms of a % between 0 and 100. so if you wanted to do the same, you would just do:
ipmitool -I lanplus -H <ip> -U root -P calvin raw 0x30 0x30 0x02 0xFF 0x32
and lastly here’s an easy chart in increments of 10 converted to hex:
| Fan Speed % | Hexadecimal Value |
|---|---|
| 0 | 0x00 |
| 10 | 0x0A |
| 20 | 0x14 |
| 30 | 0x1E |
| 40 | 0x28 |
| 50 | 0x32 |
| 60 | 0x3C |
| 70 | 0x46 |
| 80 | 0x50 |
| 90 | 0x5A |
| 100 | 0x64 |