Maintaining multiple server instances allows you to achieve ideal load balancing and to have a failsafe server as a backup if any server becomes unavailable. You can use multiple server instances with RMS. The system automatically detects most server instances every time it starts up.
All active server instances that are connected to the same configuration database provide exactly the same functionality. However, using multiple configured server instances results in better throughput with searches powered by RMS.
If you have millions of addresses or documents in a search pool, the system utilizes the available server instances to achieve faster searches. You must register any separate load balancers with your RMS system to allow the benefit of having multiple server instances. The load balancer can be either another server instance configured to be the load balancer or a third party product.