This figure shows the architecture layout for the example deployment. The architecture contains eight hardware server systems configured on a network.
Hardware system one and two each deploy Portal Server, Identity Server, and Web Server. Hardware system one and two are configured for load balancing.
Hardware system three and four each deploy Messaging Server (MTA) and Calendar Server (front end). Hardware system three and four are configured for load balancing.
Hardware system five and six each deploy Directory Server configured for multi-master replication.
Hardware system seven and eight each deploy Messaging Server (message store) and Calendar Server (back end). Hardware system seven and eight are configured for failover.