Hi, Amit:
It was my understanding that you (or somebody at your company) would have worked out some of these server specifications in a plan that was configured just for your installation. There is a whole series of installation and configuration steps that you have to go through to get the BI Platform configured correctly. I suggest you contact Tech Support for help, as this question is complicated and the answer has to be very specifically geared to your license and installation plan. And, although you would install EG and use it in the BI platform, your question is more about installing the entire platform than about installing EG.
To contact Tech Support, go to:
http://support.sas.com/techsup/contact/submit_emits2.html
cynthia