This document explains a basic recommended architecture for r12. You may not have all of these applications in your CA Service Desk r12 environment.
It is recommended to have separate servers for:
CA Service Desk Primary Server, which can host CA CMDB, CA EEM, CA Workflow
CA Business Intelligence
CA Business Intelligence Replicated MDB
It is required to have separate servers for:
CA Service Desk Secondary Servers
Note: In CA Service Desk r12, CA Workflow is a separate installer and as such can be installed either on the CA Service Desk Primary Server, or a CA Service Desk Secondary Server. You should consider this distributed architecture with EEM and CAWorkflow on a Service Desk Secondary Server if the anticipated server load for CA Workflow is going to be significant.
Note: FAST ESP and CA Business Intelligence cannot be installed on the same machine.
Note: If you install CA Service Desk and FAST ESP on the same computer, always start CA Service Desk services before FAST ESP services to avoid port conflicts.