You can stop VCS using one of the following approaches:
Using the installvcs -stop command
Manually stop VCS on each node
To stop VCS
To stop VCS manually, run the following commands on each node in the cluster:
Log in as root user.
Take the VCS service groups offline and verify that the groups are offline.
# hagrp -offline service_group -sys system
# hagrp -state service_group
Stop the VCS engine.
# hastop -local
Verify that the VCS engine port h is closed.
# gabconfig -a
Stop I/O fencing if you have configured it. Stop GAB and then LLT.