Dell R730xd Excessive Fan Speed

If you have a non-blessed card or NVME drive in your R730, the fan speed remains at max rpm.

In linux, install the ipmitool

# dnf install ipmitool
# apt-get ipmitool

Proxmox users:

# wget http://archive.ubuntu.com/ubuntu/pool/universe/i/ipmitool/ipmitool_1.8.19-6_amd64.deb
# dpkg -i ipmitool_1.8.19-6_amd64.deb
vi /etc/init.d/slow_fans

Create a script:
#! /bin/sh
/usr/bin/ipmitool -I lanplus -H IDRAC_IP -U IDRAC_LOGIN -P IDRAC_PASSWORD raw 0x30 0x30 0x02 0xff 0x30
/usr/bin/ipmitool -I lanplus -H IDRAC_IP -U IDRAC_LOGIN -P IDRAC_PASSWORD raw 0x30 0x30 0x02 0xff 0x20

chmod +x /etc/init.d/slow_fans

# slow_fans