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linxichen/dell_loud_fan.txt

Created February 7, 2022 23:35
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Solution to Dell PowerEdge server loud fan
Raw
dell_loud_fan.txt
Reddit post: https://www.reddit.com/r/homelab/comments/j3hh1r/poweredge_r730xd_fans_loud_wont_slow_down_help/
iDRAC Setting Fan Speed on Poweredge R730xd with IPMI (should work with others but cmds will vary with device names
=========================================================================================================
Reference: https://gist.github.com/mdpuma/8972079b7da52afef15cc039039ff818
1. Get your iDRAC on the LAN and config a username and password
2. In the iDRAC interface (access via web browser), enable IPMI in iDRAC Settings > Network > IPMI Settings
3. Download/install the Dell iDRAC tools for windows (in this case, filename was DellEMC-iDRACTools-Web-WINPE-9.4.0-3732_A00.exe)
4. Open a cmd prompt (iDRAC IP in this example is 192.168.16.2)
5. cd c:\program files\dell\sysmgt\iDRACTools\IPMI
# Note when you change fan settings, give it a few seconds to happen, it isn't quite instant
# get list of devices. Also "lanplus" is a specification, not your local interface name, so leave it as lanplus.
ipmitool -I lanplus -H 192.168.16.2 -U sysadmin -P ******** sdr list
# get fan speeds, exhaust temp (use dev names from above cmd)
ipmitool -I lanplus -H 192.168.16.2 -U sysadmin -P ******** sensor reading "Fan1 RPM" "Fan2 RPM" "Fan3 RPM" "Fan4 RPM" "Fan5 RPM" "Fan6 RPM" "Exhaust Temp"
# change fan speed control to manual
ipmitool -I lanplus -H 192.168.16.2 -U sysadmin -P ******** raw 0x30 0x30 0x01 0x00
# set fan speed to 30% of max (hint: 0x1e is hexadecimal for 30)
ipmitool -I lanplus -H 192.168.16.2 -U sysadmin -P ******** raw 0x30 0x30 0x02 0xff 0x1e
# set fan speed to 40% of max (hint: 0x28 is hexadecimal for 40)
ipmitool -I lanplus -H 192.168.16.2 -U sysadmin -P ******** raw 0x30 0x30 0x02 0xff 0x28
# change fan speed control to automatic (if you want to go back to letting it manage itself and be unbearably loud again)
ipmitool -I lanplus -H 192.168.16.2 -U sysadmin -P ******** raw 0x30 0x30 0x01 0x01
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