Sun Cluster HA for PostgreSQL is supported in Solaris Containers, Sun Cluster is offering two concepts for Solaris Containers.
Zones are containers which are running after a reboot of the node. These containers, combined with resource groups having the nodename nodename:zonename as valid “nodename” in the resource groups nodename list.
HA containers are managed by the Solaris Container agent, and are represented by a resource of a resource group.