Radhika,
Our baseline system requirements for running Percussion CMS can be found here:
https://help.percussion.com/percussion-cm1/install-setup/installing-cm1/system-requirements
If you’re looking for more specific guidelines, please outline your planned application server topology (will SQL Server run on the same machine as Percussion CMS or on a separate machine, etc.?) and specify which components you’re looking for advice on. Thanks!