Volume Manager Restrictions

• If you are upgrading from VERITAS Volume Manager (VxVM) 3.2 to 3.5, the Cluster Volume Manger (CVM) feature will not be available until you install the CVM license key for version 3.5. In VxVM 3.5, the CVM license key for version 3.2 does not enable CVM and must be upgraded to the CVM license key for version 3.5.

• In Solstice DiskSuite/Solaris Volume Manager configurations that use mediators, the number of mediator hosts configured for a diskset must be exactly two.

• DiskSuite Tool (Solstice DiskSuite metatool) and the Enhanced Storage module of Solaris Management Console (Solaris Volume Manager) are not compatible with Sun Cluster 3.1 software.

• Use of VxVM Dynamic Multipathing (DMP) with Sun Cluster 3.1 software to manage multiple paths from the same node is not supported. From VxVM 3.2 onward it is no longer possible to disable the installation of DMP. But having it in the I/O stack on systems with only a single path per node poses no problems. However, if you use VxVM in a configuration with multiple paths per node, then you must use another multipathing solution, such as MPxIO or EMC PowerPath.

• Simple root disk groups (rootdg created on a single slice of the root disk) are not supported as disk types with VxVM on Sun Cluster 3.1 software.

• Software RAID 5 is not supported.