About HAStoragePlus

It is highly recommended that you use the HAStoragePlus resource type to make locally mounted file systems highly available within a Sun Cluster environment. Any file system resident on a Sun Cluster global device group can be used with HAStoragePlus. Unlike a globally mounted file system like HAStorage, HAStoragePlus is available only on one cluster node at any given point of time. These locally mounted file systems can only be used in failover mode and in failover resource groups. HAStoragePlus offers FFS (failover file system), in contrast to HAStorage’s GFS (global file system).

HAStoragePlus has a number of benefits:

• HAStoragePlus bypasses the global file service layer completely. For disk-IO intensive data services, this leads to a significant performance increase.

• HAStoragePlus can work with any file system (like UFS, VxFS, and so forth), even those that might not work with the global file service layer. If a file system is supported by the Solaris operating system, it will work with HAStoragePlus.

For more information on HAStoragePlus, read the Sun Cluster 3.1 Data Service Planning and Administration Guide at http://docs.sun.com.