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
Database(MDB)
CA Business Intelligence
CA Business Intelligence Replicated MDB
FAST ESP
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.