SYNCHRONIZE NAV WITH CRM

Hello,

I want to synchronize NAV with CRM. In the same server i have 5 different sql instances. Each instance run a navision in a different language.

What is the best solution to have only one instance of CRM and try to syncronize the data from the 5 NAV or create 5 CRM instances to syncronize each NAV , and use BI tools for consolidation reporting?

Thanks in advance for your help

Kind regards

Gregory Mavrogeorgis