https://www.dell.com/community/Rack-Servers/R720-fan-speed/m-p/7479915#M5959
https://www.reddit.com/r/homelab/comments/bgx03j/solved_dell_r720xd_fan_speed_issues_no_script/
https://www.reddit.com/r/homelab/comments/79lyo5/r710_and_probably_other_11th_gen_dell_servers_fan/
https://www.reddit.com/r/homelab/comments/7xqb11/dell_fan_noise_control_silence_your_poweredge/
https://www.reddit.com/r/homelab/comments/axl46e/dell_r720xd_fan_speeds/
https://www.brentozar.com/archive/2010/01/how-to-make-a-dell-poweredge-quieter/