We have UAG installed at SP1 level using NLB on a 2 server Farm. There is a requirement to move this to SP4 due to IE11 and Windows 8.1.
Can I upgrade the master server to SP4 after Drain Stopping the master server then move all the sessions back to the master and upgrade the slave server to SP4 and restart. OR do I have to upgrade each server to the new SP level before moving to the next SP level on the MASTER. i.e. MASTER to SP2 then slave to SP2, then Master to SP3 then Slave to SP3, then the master to SP4 then the slave to SP4. With all the Drain stop/resumes in between (these are taking approx. 10 hrs to complete (tested by drain stopping the master server)
Mike
- Edited by kahliala1 20 hours 15 minutes ago