We have an exchange 2010 environment with a 3 member DAG. We have the active copy and two copies of the DAG. I am trying to mass move mailboxes but unfortunately DAGS treat mailboxes differently than previous versions of Exchange. If I log on to each server I can see the same mailboxes in the move request. I am limited to two moves at a time. I understand I can upgrade the number of mailboxes at one time by going here and performing this action http://madoxr.blogspot.com/2010/01/increasing-number-of-simultaneous.html
Would I have to do this on all three servers and will this improve or work since I am using a 3 copy dag.