During the set up of our Exchange environment one of the CAS servers had the mailbox role installed on it. Our set up is this:
Two CAS servers in an Array
Two Mailbox servers in a DAG
I need to remove the mailbox role off of one of those CAS servers -- do I just run setup and remove the role? How will the environment be affected while this is running? Can I do this during normal hours or should I schedule downtime for it?