I am a newbee in CQ. A CQ vendor told me that we can install 2 authoring instances and connect them together.
The reason why I am doing this is to use one for Web Content Management and another for Master Content Repository which is not
neccessary reflecting our web structure.
Is there anybody have a experience about this?
If yes, should I physically install twice for author?
If this works, how can I connect them together? what kind of configuration should I do?
I am not sure wheather you are looking for clustering or virtual repository. For more details refer  & 
You can install number of instance. However if it is same machine make sure to change the port number. For clustering you can join in various ways as desribed in .