On this server, you can update the firmware without impacting hosts that are running on PDomains. For hosts that are running, the firmware will automatically be updated when the running PDomains are powered off then powered on.
In the event that you try to update the firmware with a version that is incompatible with the firmware on the running PDomains, the system will instruct you to shut down the hosts with the incompatible version and then update to the new firmware version. Optionally, to ensure that all SPs and hosts move to the new image in lock-step, you must power off all hosts.
In addition, Oracle ILOM ensures that the system is upgraded automatically to the correct firmware when swapping SPs and powering hosts off then on.
The firmware image you install to update the system firmware includes all necessary firmware components, including the Oracle ILOM firmware, OpenBoot PROM firmware, POST firmware, and miscellaneous files. The firmware image is installed in the flash memory of the SP.