This sections lists the prerequisites for installing Calendar Server in an HA environment.
The following prerequisites apply:
Either the Solaris 9 or the Solaris 10 operating system must be installed on all nodes of the cluster, with required patches
Sun Cluster 3.0 or 3.1 must be installed on all nodes of the cluster
Calendar Server HA Agents package (SUNWscics) must be installed on all nodes of the cluster using the Java Enterprise System installer
Specify local file systems as HAStoragePlus Failover File System (FFS) systems, or HAStorage Cluster File System (CFS)
If you have a version of Sun Cluster 3.0 dated December 2001 or earlier, you must use the global file system, specified as a HAStorage Cluster File System (CFS).
If logical volumes are being created, which is true for the symmetric high availability system, use either Solstice DiskSuite or Veritas Volume Manager.
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. An HAStoragePlus file system is available on only 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 Failover File System (FFS), in addition to supporting the older Global File System (GFS), or Cluster File System (CFS).
HAStoragePlus has a number of benefits over its predecessor, HAStorage:
HAStoragePlus bypasses the global file service layer completely. For data services requiring an intensive number of disk accesses, 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.
Use HAStoragePlus resources in a data service resource group with Sun Cluster 3.0 Release May 2002 and later.
For more information on HAStoragePlus, see Sun Cluster Data Services Planning and Administration Guide for Solaris OS.