Administration Guide › Set Up Distribution and Routing › DSAs with the Same Prefix › Failover and Failback › Failover between Hosts

Failover between Hosts

CA Directory automatically sets up failover between data DSAs in the same site that serve the same namespace partition. These DSAs are also automatically replicated.

Example: Failover to a Backup DSA

The following diagram shows a single router DSA that usually sends requests to the Customers DSAs on its own host, and on the NY21 host.

If both of these data DSAs fail, the router DSA automatically sends all requests to the Customers DSA on NY23. This change is invisible to the clients.

In this example, the Customers DSA on NY23 is a backup: it is used only if the other data DSAs fail.