
Explanation/Reference:
Explanation:
The following steps show how to create a SQL Server alias on SharePoint 2013 Servers using the SQL Server Client Network Utility:
1 - Run SQL Server Client Network Utility at:
C:\windows\system32\cliconfig.exe
2. Select the Alias tab, and click Add.
3 - From the Network Libraries section, select TCP/IP.
4 - Type an alias in the Server Alias text box and the SQL Server instance in the Server Name text box.
5 - Check Dynamically Determine Port and click OK.
NOTE: If you use another port to connect on SQL Server, uncheck this option and set the correct port manually.

Reference: Configuring SQL Server alias with SharePoint Server 2013
http://blogs.technet.com/b/gabn/archive/2014/04/14/configuring-sql-server-alias-with-sharepoint-server-
2013.aspx