DR Configuration on Window/Oracle

Dear All

I need some clarification for DR configuration.  I have production system installed on Window 2008 r2, oracle database 11.2.0.2 which MCS cluster as high availability option for ECC 6.0 EHP5. We have procured the same OS and database software at DR site also. Now I am planning to configure the DR system.

Please clarify the below doubts:

1. At the DR site we are planning to copy the mirror image of production system (OS & Database) and change the system information
   (like hostname, services details etc) as required.

          Question: Is it right option ,  please suggest?

     2. For disk configuration at server and storage level we should consider the same as production or some other method. 

        Question:  Quorum disk for cluster etc, LUN level etc at storage level should be same as production ? please clarify

     3.  Are we should go for the installation of SAP software at DR system and the restore the database?  There may be changes in software

          information at DR  system and informay may  not match with production system.

   Question: Is it right option, please suggest?

Regards

Vimal