When Must You Use VMS Or CMS Including Pros And Cons?

Hi All,

I am trying to understand when must you use VMS, for small, medium or large set up. Also what are the real benefits of having a VMS instead of just purchasing NVR's. Most suppliers are proposing the VMS which is a higher cost but i am trying to understand the benefits others than the integration level. Appreciate if you could share a guide to act as a benchmark and also to share with clients from an advisory standpoint.

Thanks

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