I'm going to install Sp3 on my Exchange 2010 server today. I've already done the install on my test system and it went fine.
I have a question though. I am running a DAG. The docs I find online all say to move the databases to another node when running the update. Is this solely to keep users up and running or is it necessary to to in order for the upgrade to run properly.
I ran the upgrade on TEST without moving databases around and it seems to have worked fine (only a few users on my TEST system though).