Can the Exchange 2010 CAS role be installed on Windows Server 2008 R2 Core installation? If so, is there any documentation provided by Microsoft that verifies that this is valid and that it is a supported type of installation? All other roles will be on a full installation of 2008 R2. Thanks in advance.

While OS installation choose Enterprise or Standard Use this link to Installing Exchange 2010 Sp2 on Windows Server 2008 R2 Sp1 Step by Step with Screen Shots http://careexchange.in/?p=104 Have a Good day