vCNS 5.1 replaces vShield 5.1, and if you do not add new nodes during your installation, you can easily perform all upgrades without removing any components of vShield. vCNS upgrades will upgrade all components of vShield.
Edward L. Haletky, aka Texiwill, is an author, analyst, developer, technologist, and business owner. Edward owns AstroArch Consulting, Inc., providing virtualization, security, network consulting and development and TVP Strategy where he is also an Analyst. Edward is the Moderator and Host of the Virtualization Security Podcast as well as a guru and moderator for the VMware Communities Forums, providing answers to security and configuration questions. Edward is working on new books on Virtualization.