Hello,
Yes you can do this. It is how I run my environment. VCNS Edge will run on any ESXi host, it is not ESXi that limits it, but the license inside vCenter. If you have a vCloud Suite license then VCNS Edge is available to you to use anyway you desire. However, note that there is no real integration between VCNS (vShield) Manager and the clients, you are better off using its own interface to deploy your edges, etc.
Best regards,
Edward L. Haletky
VMware Communities User Moderator, VMware vExpert 2009, 2010, 2011,2012,2013,2014
Author of the books 'VMWare ESX and ESXi in the Enterprise: Planning Deployment Virtualization Servers', Copyright 2011 Pearson Education. 'VMware vSphere and Virtual Infrastructure Security: Securing the Virtual Environment', Copyright 2009 Pearson Education.
Virtualization and Cloud Security Analyst: The Virtualization Practice, LLC -- vSphere Upgrade Saga -- Virtualization Security Round Table Podcast
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Edward L. Haletky
vExpert XIV: 2009-2023,
VMTN Community Moderator
vSphere Upgrade Saga: https://www.astroarch.com/blogs
GitHub Repo: https://github.com/Texiwill