Hello,
What version of SEPM 11.x were you running?
It is important that you install the same version of SEPM 11.x on the new server of which the backup has been taken.
Secondly, Are you using the exact steps provided in the Disaster Recovery for SEP 11.x?
Symantec Endpoint Protection 11.x: Best Practices for Disaster Recovery with the Symantec Endpoint Protection Manager
http://www.symantec.com/docs/TECH102333
Symantec Endpoint Protection 12.1: Best Practices for Disaster Recovery with the Symantec Endpoint Protection Manager
http://www.symantec.com/docs/TECH160736
Also, check these Articles below on How to move to new server.
For SEP 11.x, check this Article:
How to move Symantec Endpoint Protection Manager from one machine to another
http://www.symantec.com/docs/TECH104389
For SEP 12.1, check this Article:
How to move Symantec Endpoint Protection Manager 12.1 from one machine to another
http://www.symantec.com/docs/TECH171767
Hope that helps!!