Question about primary data source for distributed environment

Tim, yes you app servers need to point to the same data sources (both primary and business).
However, we recommend adding an engine gateway only in very narrow circumstances. The additional gateway will provide load balancing for read transactions, which will not help performance if the majority of your transactions are writes. Multiple gateways require very stringent IO and network specs and put additional strain on your maintenance. I highly recommend you balance your needs with associated additional costs.

Tim, yes you app servers need to point to the same data sources (both primary and business).
However, we recommend adding an engine gateway only in very narrow circumstances. The additional gateway will provide load balancing for read transactions, which will not help performance if the majority of your transactions are writes. Multiple gateways require very stringent IO and network specs and put additional strain on your maintenance. I highly recommend you balance your needs with associated additional costs.