Nagios Support Forum

This may seem like a very stupid question, but having been a year+ user of Nagios XI, and having just tried the online demo of Nagios Fusion, I'm having a very hard time understanding what Fusion does that XI does not.

Does XI already contain all/most of Fusion's capability, or is there some added functionality that I am missing?

I appreciate the clarification.

Fusion acts as a central dashboard between multiple XI servers. Logging into Fusion gives you a high-level overview of all XI servers, and it also gives a unified login to all servers. It is important to note that Fusion doesn't do any monitoring on it's own, it's goal is to be a central viewer for several Nagios servers. The current version has limited features, but we're working on a 2012 version that is much more feature rich.
http://labs.nagios.com/2012/05/24/nagio ... 2-preview/

Understood, thanks - What is the best way to discuss an overall architecture for a monitoring project we are rolling out? This would involve parallelization, either using DNX or multiple nagios machines. I'd like to get some professional insight before I start rolling anything out.

Who is the best person to talk to?

I would post your implementation specs and size to the Nagios XI customer forum. Each of us techs can give our insights, but we also have a lot of customers who may have some good insights and suggestions as well, and I find their suggestions from the field useful as well.