Can someone point me to a good resource for understanding connectivity to msolap.

When I open Microsoft Data Analyzer and create a connection using connection type "server", what kind of connection am I opening and what are its dependencies on the client side and the server side?

I have been experiencing issues with the data analyzer either not getting a connection at all or only seeing some cubes but not all.

If anyone has some experience with this which they would like to share I would be most grateful.