I install two OS in my new DL20 Gen10 Server for homelab, one intel SSD with Windows Server 2019 OS, and Esxi 7.0 with HPE custom ISO install to USB disk inside of chassis.
When I select boot to win server 2019 , the three fan are lower to 6%,6%,18% . I run spp to install agnetless and other driver.
But when I reboot and select F11 to esxi 7.0, the fan 3 is up to 48%. The esxi 7 is install by hpe custom iso, and it include agentless , in iLo page show agentless is OK.
Same hardware but different fan rate ? the bios and fan control function is real need to check.
I choose DL20 for homelab, so the noise is something I care about. I have a ruck install my switch and DL20 G9,DL320Ev2 Gen8 server. they are ok fan noise with Esxi 6.7u3.