I am needing to know if there is an easy way to merge two DNN sites.  One was a previous version of DNN and has recently been upgraded to match the version of the target site we are wanting to merge with.  Here's the catch:

Our site has portals 1-8 already, and we are needing to add the portals on as a higher numbered portal.  Are there any guidlines for merging two DNN databases?  I can't merge the databases straight up without violating any constraints.

As advised by Tony., I would recommed to install individual portal as one application. The drawbacks of installing multiple portals in one application if the application encounter an error or there was a glitch error on database will effect the whole portals.

 

I do not see any problem with multiple sites on one install, separating them is easy enough when necessary, but I do not think I would want to try merging them.  The time involved in converting all of the tables so they have the proper portal ids, module ids, user id, and other, prior to a merge would out weigh the benefits of putting them together in my opinion.