My company is preparing to upgrade to Exchange 2010. Recently we have been meeting with consultants to prepare and think of the best plan for deployment and the smoothest upgrade.
Exchange 2003 (1 front-end and 1 back-end server) at one location
Active Directory 2003 - Multisite
Root Domain: company.net
All Servers/Computers/Users (EVERYTHING) is currently on corp.company.net
When users logon to their computer or anything it is always the CORP domain.
MIigrate everything to Exchange 2010 - 2mailbox servers 2Hub/CAS server in primary location (1mailbox/1HUB/CAS with DAG in DR site)
Our domain was previously migrated from an existing Novell domain.
The consultant recommended that we create a new child domain of company.net called "EXCH" or something similar that would be domain 2008. He recommended that we install our Exchange 2010 configuration on the new EXCH.company.net domain and create a trust relationship between the two domains. Another reason for creating a new domain would be that it is cleaner and does not currently have Exchange 2003 or old potential Novell corruption.
I was initilaly weary of creating a new child domain for Exchange as i am not sure what other repurcussions there would be? The Plan would be to eventually upgrade corp.company.net to 08 and upgrade our root domain to 08 as well.
I'd prefer to keep it all on the same corp.company.net domain for simplicity of management and administration. But - i wouldn't mind if it was installed on a cleaner new AD environment if it will not cause any more complexion or confusion. How would the relationship work between the two domains?
Is this a recommended Best Practice to do? What do you Experts think about this plan and what else could we do?
Thank you, Experts.