Increasing simultaneously number of Mailbox moves in Exchange 2010

Sometimes we want to minimize the time required to move all the current mailboxes available on Exchange 2003 / 2007 to Exchange 2010, and for configuring your Exchange 2010 to process high number of mailboxes move simultaneously, we need to change the default configuration, which described as follows:

1. Go to all Exchange 2010 CAS Servers, open the below file in notepad or any file editor:
X:\Program Files\Microsoft\Exchange Server\V1\Bin\MSExchangeMailboxReplication.exe.config

2. Change the below values:

MaxActiveMovesPerSourceMDB = “25″

MaxActiveMovesPerTargetMDB = “25″

MaxActiveMovesPerTargetServer = “25″

3. Save the file and restart the “Microsoft Exchange Replication” service.