migrating exchange 2003 to exchange 2010 running on Windows Server 2012 (standard).
We have migrated our DC from our Windows 2003 server to our new windows 2012 (standard) server. We still have the old 2003 server configured as a DC also. We would like to decommision our old 2003 server on completion, so when would you recommend disabling the DC on the old server? After migration of exchange or before?
We have exchange 2003 still running on our old 2003 server, and would like to :-
1). Install Exchange 2010 on our new 2012 server
2). Migrate our exchange server from the old 2003 to the new 2010 version on our new 2012 server.
Will mail services be affected during migration, and if so, at what point? Ideally we would not like any lengthy outages, as this is a busy live site.
Can anyone recommend any documents, videos (youtube) etc which details this process, as I would like to be as familiar with this process as possible before I start.
We do have access to the Trainsignal library, but can find nothing which relates to the exchange migration.