Expand a Stand-Alone Primary Site into a Hierarchy with a Central Administration Site

Question

I have a stand alone SCCM server in my Lab. Now I need to install a CAS and add the stand alone SCCM site to the hierarchy.
As I have searched on Google the steps are quite simpler I have followed the below link for doing the same.
http://technet.microsoft.com/en-us/library/jj591551.aspx
http://www.scconfigmgr.com/2013/05/03/install-a-configmgr-2012-sp1-central-administration-site/
But when i click on install, the installation failed at this particular step:-
In the log file below is the error I received:-
I am only using a single Domain account throughout the environment and SQL and SCCM has been installed with the very same account. 
Stand alone site has been installed on the default SQL instance and I have created a named instance "CAS" for CAS installation on the very same SQL Server. The domain account has sufficient rights on the SQL and the Machine accounts have the local
admin privileges both for CAS and stand alone and also on SQL.
Gaurav Ranjan

Answer 1

Hi，
Have you disabled the firewall?
You could create a UDL file to test connectivity between machines (See
http://msdn.microsoft.com/en-us/library/e38h511e(v=VS.71).aspx for more information)
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