How To Quiet Down a Dell PowerEdge R620 & R720
August 9, 2022

How To Quiet Down a Dell PowerEdge R620 & R720

The Dell PowerEdge R620 which I run in my server rack is surprisingly loud. The lowest / quietest fan speed I can set through iDrac is not quiet at all. The “Low Offset” fan profile still continues to run the fans at 60% of their speeds, I decided to attempt to set raw IPMI settings using the ipmitool. Since I’m running ESXi 7 on this server, I installed a version of ipmitool directly into VMware’s ESXi for in-band ipmi control.

This procedure will set the the fans of an R620 and R720 to 20% using manual control. I also found that this setting needs to be re-applied after a server reboot.


  1. Download the ESXi Ipmitool here: ipmitool-esxi-vib-1.8.11-2
  2. SSH into ESXi. You may need to start the SSH service first
  3. Set the software acceptance level to “Community”
    esxcli software acceptance set --level=CommunitySupported
  4. Transfer the ipmitool VIB over to ESXi using SCP and place into /tmp folder
    scp root@your-esxi-server:/tmp/
  5. Install the ipmitool VIB
    esxcli software vib install -v /tmp/ipmitool-1.8.11-2.x86_64.vib
  6. Verify the ipmitool VIB is installed and working by simply printing the LAN configuration.
    /opt/ipmitool/ipmitool lan print
  7. Set your IPMI into Manual Mode
    /opt/ipmitool/ipmitool raw 0x30 0x30 0x01 0x00
  8. Set your fans to 20%
    /opt/ipmitool/ipmitool raw 0x30 0x30 0x02 0xff 0x14