This following change was introduced in the Sun Cluster 3.0 5/02 update release and applies to this update and all subsequent updates to Sun Cluster 3.0 software.
Highly available local file system - Using HAStoragePlus, you can integrate your local file system into the Sun Cluster environment making the local file system highly available. HAStoragePlus provides additional file system capabilities such as checks, mounts, and unmounts enabling Sun Cluster to fail over local file systems. In order to failover, the local file system must reside on global disk groups with affinity switchovers enabled.
See the individual data service chapters or "Enabling Highly Available Local File Systems" for information on how to use the HAStoragePlus resource type.