You must upgrade the following to version 5.0.1:
Use the installvcs program to upgrade VCS.
See Upgrading from VCS 4.1 or 5.0 on HP-UX 11i v2 to VCS 5.0.1 on HP-UX 11i v3.
See Upgrading from VCS 5.0 on HP-UX 11i v3 to VCS 5.0.1 on HP-UX 11i v3.
You can perform a phased upgrade to minimize the downtime for
See Performing a phased upgrade of VCS.
See Upgrading the VCS agents.
VCS Cluster Manager
See Upgrading the Cluster Manager (Java Console).
See Upgrading VCS Simulator.