I upgrade ucs from 2.0.2x to 4.0.4
everything is fine , but After I click acknowledge reboot primary FI, all blades on 10 9 chassis rebooted at same time, and pass long time rediscover time, we lost all bussiness for 2 hour, because we need time to start vm on vcenter
I met same thing before when I upgraded FI, especially reboot primary FI, all blade same lost control , so have to reboot, but I checked ha status , and pmon status(some retries),
How can I avoid all blade rebooting ,because it is diffcult to transfer all vm to another ucs in sometime.
thank you
Tom