Hi,
If the SEPM server keeps the same IP and host name, you can refer to "Best Practices for Disaster Recovery with the Symantec Endpoint Protection Manager"
SEP 11.x: http://www.symantec.com/business/support/index?pag....
Check this article as well:
https://www-secure.symantec.com/connect/articles/hot-move-sepm-one-server-another-server
If you need any other help then please let us know.