QlikSense architecture set up for 10,000 users

[#1]

Hi Experts

I need to create a QlikSense setup for 10,000 users sitting at 6 different geographical locations. Currently we have single node architecture. I have gone through the documents available at Qlik website. But i am confused about the best suitable setup for my scenario. Following are the questions i have in my mind

1. Generic idea of large enterprise setup which works along with Site minder SSO where strings are tied to a Active directory group for authentication or SSO using tickets ( OAuth standard )
2. How to externalize a web/proxy server in sense setup for external access ? 
3. Which deployment console method to use - Multiple sites or Software as a Service (SaaS)
4. What type of scalability is best suited here - Basic two server deployment or Scaling horizontally with multiple servers

Thanks

Ram

[oknotsen]

I strongly advise you to give your local Qlik office a call and ask for support by one of our Presales Consultants or Architects.

[#3]

Below shown is the architecture diagram for my setup