I am starting from a Small Business Server 2008. It has Exchange 2007 on it. The server also has active directory and the users "Company" files that everyone in the organization shares.
My original thoughts were to migrate the Company files to a files server, migrate from Exchange 2007 to 2010 and then migrate the active directory to Server 2008 R2. Everything seems to logically make sense except this is a Small Business Server. My users are dragging their feet on the Company files so I might be having to do that one last. I know I won't be able to migrate the active directory yet but can I put a Server 2008 R2 online and install Exchange 2010 and migrate the mailboxes/public folders, etc. Will the SBS play nice with the new Exchange server or is it going to fight with it and something get turned off and stop working? If anyone has done this type of migration any insight would be greatly appreciated.