The ability to independently scale services with MDS (multi-dimensional scaling)
is an Enterprise edition capability. You can use homogeneous scaling with Community edition. That is, add all services to each node.
If you are looking to test performance ans scale, keep in mind community edition does not comes with a number of performance and scale features like this one I mentioned.
There is a full list of differences here.
http://developer.couchbase.com/documentation/server/4.1/introduction/editions.html
The process is fairly simple to get to full homogeneous scaling with all services running on all nodes: You will need to do a rolling upgrade
- Failover/Remove a node and Rebalance
- Add the node in but this time check all services in the Add Node Dialog.
- Repeat for each node.
thanks
-cihan