You can configure majority-based fencing for the cluster using the installer .
Perform the following steps to confgure majority-based I/O fencing
# /opt/VRTS/install/installer -fencing
Where version is the specific release version. The installer starts with a copyright message and verifies the cluster information.
Select the fencing mechanism to be configured in this Application Cluster [1-7,b,q] 3
Updating /etc/vxfenmode file on sys1 ................... Done Updating /etc/vxfenmode file on sys2 ................... Done
# vxfenadm -d