The SUNW.HAStoragePlus resource type performs the same functions as SUNW.HAStorage, and synchronizes actions between HA storage and the data service.
SUNW.HAStoragePlus also has an additional feature to make a local file system highly available.
The SUNW.HAStoragePlus resource type can optionally be configured with the Domain Administration Server component of the Sun Cluster HA for Sun Java System Application Server. However, the SUNW.HAStoragePlus resource type may not be configured with the Node Agent component of this data service.
See the SUNW.HAStoragePlus(5) man page and Synchronizing the Startups Between Resource Groups and Disk Device Groups in Sun Cluster Data Services Planning and Administration Guide for Solaris OS for background information.