Exchange 2013 Installation Steps
We’re installing Exchange 2013 into an environment that’s running server 2008R2 for all Domain
Forest/Domain functional levers are 2008R2
Active Directory schema has been updated.
All prerequisites for Server 2012 have been installed via this article
Install the office 2013 filter pack.
Firstly very recommended is to check for updates in the Installation:
Very important to check the recommended settings which basically means that Microsoft will help to improve future Exchange features!
No more 5 roles!!!!
Mailbox Server Role or Client Access!! Reminds a bit the exchange 2003 Architecture