Creating databases to an existing AG

Hi guys,

Hopefully you can help me to get to know the best way how to create new databases in an existing available group.

For SharePoint it is recommended to configure a CAP. Therefore I need an additional name and another IP but it this really necessary? If so there would be two names and two IPs for every AG if I want to install the databases directly.

http://technet.microsoft.com/en-us/library/hh913923(v=office.14).aspx

I thought therefore we configured the listener: “An availability group listener is a server name to which clients can connect in order to access a database in a primary or secondary replica of an AlwaysOn availability group.“

Why do we need a CAP too? Are there other ports in use?

Thanks everyone for clarification!

Viele Grüße

Christian