The following are the requirements for providing high availability of the virtualization environment:
Install SFCFSHA on the physical host
Refer to Veritas Storage Foundation Cluster File System Installation Guide - Linux
Review the settings of the virtualization environment for which you want to provide high availability
Refer to Symantec Storage Foundation and High Availability Solutions Virtualization Guide - Linux
Enable ApplicationHA capabilities for underlying VCS.
Refer to Symantec ApplicationHA User's Guide - Linux on KVM