We are in the process of migrating from 10.3.4 to 11.2.1 MU2 and it appears that our 1200 desktops PCs will require 3 agents installers with 3 reboots for the upgrade. Is that correct? For our laptops, the 11.2.0 takes 15-17 minutes to install, 11.2.1 takes 14-16 minutes to install and the MU2 seems to be somewhat quicker, but all appear to require reboots. 3 reboots and about 45 minutes to 1 hour for the whole process (start to finish).

The above migration path is not going to go over very well in our company as we have never had any kind of migration that required as much time or as many reboots as this one. Any thoughts or tips on how we could get it down to one reboot?

I am a little nervous because our last migration to 10.3.1 to 10.3.3/10.3.4 was pretty messy with lots of agents being orphaned. I really want this one to go smooth.