Storage Foundation provides the vxclus command line utility to allow forcing a failover to the secondary site. The command vxclus enable creates an entry in the Registry that enables the cluster disk group to be brought online on a node with a minority of the disks. After you run vxclus enable, you can bring the disk group resource online in the Microsoft cluster. After the cluster disk group is brought online, the vxclus functionality is disabled.

For more information on the vxclus utility, see the Storage Foundation Administrator's Guide. The vxclus utility also provides support for booting from a SAN, but you must have a hardware storage array that supports the capability.