Sun Java System Directory Server Enterprise Edition 6.3 Deployment Planning Guide

Directory Server Failover Data Service

The Directory Server Failover Data Service runs on a single node in a cluster. However, nodes can have multiple CPUs for scalability. A fault monitor periodically monitors this failover service.

The Resource Group Manager (RGM) manages data services as resources. When a CMM changes a cluster's membership, the RGM might request changes to the cluster's online or offline resources. The RGM starts and stops failover data services.