Sun Cluster 3.1 8/05 and Sun Cluster Agents 3.1

Sun Cluster components are supported on the Solaris platform only.

Sun Cluster software provides high availability and scalability services for Java ES and for applications based on the Java ES infrastructure.

A cluster is a set of loosely coupled computers (cluster nodes) that collectively provide a single client view of services, system resources, and data. Internally, the cluster uses redundant computers, interconnects, data storage, and network interfaces to provide high availability to cluster-based services and data. Sun Cluster software continuously monitors the health of member nodes and other cluster resources and uses the internal redundancy to provide near-continuous access to these resources even when failure occurs.

The Java ES installer provides the Sun Cluster Core subcomponent and the Sun Cluster Agents as separately installable components. The following Sun Cluster agents are included in Java Enterprise System.

HA in the following list stands for high availability.

• HA Application Server

• HA Message Queue

• HA Directory Server

• HA Messaging Server

• HA Application Server EE (HADB)

• HA/Scalable Web Server

• HA Instant Messaging

• HA Calendar Server

• HA Apache Tomcat

• HA Apache

• HA DHCP

• HA DNS

• HA MySQL

• HA Sun N1 Service Provisioning

• HA NFS

• HA Oracle

• HA Samba

• HA Sun N1 Grid Engine

• HA Solaris Containers

The list of agents is not the same on SPARC and x86. For detailed information about Sun Cluster Agents, see Sun Cluster documentation at http://docs.sun.com/app/docs/prod/entsys.5.