Ok, i now have the setup
We have 1 x DAG with 3 x member servers with all roles on each server (MBX, CAS & HUB)
2 Mailbox Servers at Prod Site, 1 at DR Site.
All Active databases will be held on mailbox servers 1 & 2 (Active passive), whilst mailbox server 3 will be passive. all on H/W load balancer
I know the order, eg; patch DR first then other two, but do i have to run the below on each one I patch?
- Run the StartDagServerMaintenance.ps1 script to put the DAG member into maintenance mode and prepare it for the update rollup installation.
- Install the patches.
- Run the StopDagServerMaintenance.ps1 script to take the DAG member out of maintenance mode and put it back into production.
and what about putting them back on 1&2 only so have 3 just as passive? any specific steps i need to take
suggestions? thanks