Sree,
Your question is really hard to answer as it covers EVERY problem out there. That is mission impossible for us. What I do suggest is that you create
a login on
http://now.netapp.com
and familiarize yourself with the website. Its pretty good. Also, take a look in Software download > toolchest. There are a few good tools there. One is an
Ontap simulator you can install on a LINUX box for testing. It can run a cluster of controller or just a single head.
This is a good starting point
http://now.netapp.com/NOW/knowledge/docs/docs.cgi
and this
http://now.netapp.com/NOW/products/globalservices/now_ref_best_practices.pdf
Eric