Ex2013 Namespace for DR site

Question

Hi ,
As per the Microsoft article single namespace is sufficient we don't require diffrent namespace for DR site. How it will work if primary site goes down.

Answer 1

As Ed said - if geo -dns implemented ,if primary goes down then DR site will be accessible .Copy the article here.
I think you are referring to new CAS architecture and fewer name space. Via Layer 4 implementation you can achieve some sort of HA because the browser  keeps multiple ip of the same domain and retires to connect to the secondary ip after 20 seconds,
so in case if primary ip does not respond then the browser will try to connect to the 2ndry ip.
This is what you are referring to?
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