Move Mailboxes from Exchange 2003 Servers to Exchange 2010 Servers
Applies to: Exchange Server 2010 SP3, Exchange Server 2010 SP2
Topic Last Modified: 2009-12-07
Moving mailboxes from Microsoft Exchange Server 2003 Service Pack 2 (SP2) or later to Exchange Server 2010? Consider the following:
The move process is performed offline, and end-users won't be able to access their mailboxes during the move.
Perform the move from a server running Exchange 2010 by using the move request cmdlets in the Exchange Management Shell. You can't use Exchange System Manager on an Exchange 2003 server to move the mailboxes.
You can't move mailboxes from Exchange 2003 Service Pack 1 (SP1) or earlier.
Exchange 2003 doesn't have resource mailboxes. Instead, you must use shared mailboxes to represent resources. If you move a shared mailbox from Exchange 2003 to Exchange 2010, the move request creates the mailbox as a shared Exchange 2010 mailbox. After you move the mailbox to Exchange 2010, you can convert it to a resource mailbox. For more information, see Convert a Mailbox.
For detailed instructions about how to move mailboxes, see Managing Move Requests.
To learn more about moving mailboxes, see Understanding Move Requests.