Forum Discussion
How to migrate 6 Exchange 2013 servers with 2 DAGs to 2019
I have read through some contents for the titled including below and some others "https://techcommunity.microsoft.com/t5/exchange-team-blog/best-practices-for-migrating-from-exchange-server-2013-to/...
The Exchange Server 2019 servers with new mailbox DBs need to be in a new DAG and you migrate the mailboxes from Exchange Server 2013 to the new DBs on Exchange Server 2019.
The Exchange Server Deployment Assistant provides more guidance https://learn.microsoft.com/en-us/exchange/exchange-deployment-assistant?view=exchserver-2019
The Exchange Server Deployment Assistant provides more guidance https://learn.microsoft.com/en-us/exchange/exchange-deployment-assistant?view=exchserver-2019
so i should not do or think in a way that i am moving the DB to new DAG but
create new DAG and new DB, then move the mailbox from old DB to new DB?
- Correct. There is no supported way to move a mailbox DB from one DAG to another. You have to move the mailboxes from the old DB/DAG to a new DB/DAG