Exchange 2007 CCR became one of most popular implementation now specially for customers who seeks redundancy on the level of the database and customer who want to achieve site resiliency without the normal SCC Geo-Cluster requirements. CCR uses the new...

New refresh for the Exchange 2007 help file is here http://www.microsoft.com/downloads/details.aspx?familyid=555F5974-9258-475A-B150-0399B133FEDE&displaylang=en