Ah, I can see where you're coming from. I think in your position, I'd absolutely start with a single server set-up in one of your datacenters. Run it there as a PoC for a good few weeks with a variety of inputs. Then you'll be able to see the volumes that you're getting for your different hosts & sources, etc over time. Use the very excellent built-in Monitoring Console to drill down into this info. This will then give you a really good feel for the volume of data (intersite traffic) which you may get from similar feeds from your second datacenter. That will then allow you to weight up the value of going with Enterprise (with Distributed Search) or Light. You never know, it may be more cost effective to up the bandwidth between your DCs! Enjoy. ... View more