Ring Configuration

The ring configuration allows for one primary and one backup server to be specified for each set of data services. The backup for a given data service is a node adjacent to the primary. All disk storage is dual-hosted and physically attached to exactly two cluster nodes. The nodes and storage are connected alternately, in a ring. All nodes can be actively running applications. Each node is both a primary for one set of data services and a backup for another set. Figure 1-14 shows a four-node ring configuration.

A restriction to the ring configuration is that you cannot run multiple RDBMS data services on the same node.

The ring topology is supported on Solaris 2.6 and 7, but not on Solaris 8.

Figure 1-14 Ring Configuration