Dear All who might face such kind of Issues.
Rather than copying the DC VM in DR Environment, Install ITAM in Both DC and DR with the same DB name and Credentials.
The DR system is in cold state so no need to do any configurations on it.
Just do a Default Installation and leave everything on the DR site. Do all the Customization on the DC site.
The DB credentials that are used to connect to DB are stored in the Config Files which in this case are already pointing to the default DB on DR Site.
This way you need not worry about changing the Credentials to point to DB Server DEF, Just make sure the DB name (mdb) and credentials used to connect to DB are same in both DC and DR.
Now you can start replicating your DB to the DR site and once your DC goes down, You can Restore the DB in the DR site and Move the DR site in the Active State. This restoration will move all your Customization that were made in the DC to the DR site because they are stored in the DB.
This is the Best-Practice for almost every application.
Regards,
Sahil