Hi, Yes your understanding is correct. You don't need to do anything on the server. But make sure that the required ports are opened between OME and iDRAC when you are performing system update via iDRAC.
Quick question. If I update BIOS and firmware (e.g. NIC) using OME via the iDRAC, does anything need to be done on the server first? I have several new ESXi R720s that I need to update. They're not running any VMs (they haven't been configured/set up yet) but they are turned on and are at the basic ESXi login screen. My understanding is that the iDRAC will do everything in the background and then only reboot the server once it's finished, so the only downtime is during the reboot. Is that correct? If the situation changes and the servers do have VMs set up, will anything need to be done before I run the system updates from OME? The iDRACs are all discovered using WS-MAN. Thanks.
Updating firmware/BIOS using OME and iDRAC