Kapil,
MicroStrategy licenses are either per seat (# of users) or per Server.
If the client wants to by a per Server, then they need to provide number of
cores in the machine and clock speed of the CPUs.
That is all taken in consideration on your final price.
I never heard the term DSI but I am guessing all they need is information
about the server where you are installing the products.
Hope that helps,
Caio Gouveia
www.dmeaning.com