If your installation plan calls for high availability of some other product, acquire the agent that supports the product, then install and configure the agent following the instructions in the appropriate Sun Cluster data service guide. One way to get agents for other products is from the Java ES accessory CD.
Data service guides for the Solaris SPARC platform are available here: http://docs.sun.com/coll/1124.4
Data service guides for the Solaris x86 platform are available here: http://docs.sun.com/coll/1125.4