Hi, My bad I missed the fact that I had a NIC card selected hence reboot.
Interesting behaviour when apply firmware as part of Firmware baseline. I discovered a test R730 with firmware baseline. OME detailed all of the updates applicable. I selected the disk microcode updates noting these did not require a reboot. Job ran, but issued a reboot of the server. Can you explain this behaviour? If there is a risk of reboot I will be unable to apply updates without securing a maintenance window. 
Unexpected reboot