The Oracle Solaris Cluster HA for Oracle VM Server for SPARC (HA for Oracle VM Server) data service provides the ability to split a single physical system into multiple, independent virtual systems. This is archived by an additional software application in the firmware layer, interposed between the operating system and the hardware platform called the hypervisor. It abstracts the hardware and can expose or hide various resources, allowing for the creation of resource partitions that can operate as discrete systems, complete with virtual CPU, memory, and I/O devices.
You create the logical domain on any one of the nodes of the cluster. However the services configuration must be identical on all the potential primary nodes. The domain configuration is retrieved by the ldm list-constraints -x ldom command and stored in the CCR. This globally accessible information is used by the HA for Oracle VM Server agent to create or destroy the domain on the node where the resource group is brought online or offline.
HA for Oracle VM Server provides a mechanism for orderly startup and shutdown, fault monitoring, and automatic failover of the Oracle VM Server for SPARC logical domain service. The Oracle VM Server for SPARC component is protected by the HA for Oracle VM Server data service.
Note the following points regarding support for the SR-IOV device in the HA for Oracle VM Server data service:
An SR-IOV device is not supported for live migration of the HA for Oracle VM Server data service. This restriction exists as of initial release of the Oracle Solaris Cluster 4.2 software. Contact your Oracle support representative to learn whether support for the SR-IOV feature becomes available.
An SR-IOV device is supported for normal migration of the HA for Oracle VM Server data service. This support requires that the SR-IOV device path is identical on all potential primaries of the data service's resource group.