There are two methods to move Symantec Endpoint Protection Manager (SEPM) from one machine to another:

Method 1: 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"

http://www.symantec.com/business/support/index?pag....

Method 2: if the new SEPM server has a different IP and host name, there are two alternatives:

1. Use replication to install a new SEPM and keep the policy the same with old SEPM. See "How to move Symantec Endpoint Protection Manager from one machine to another" 

http://www.symantec.com/business/support/index?page=content&id=TECH104389

2. Install a new SEPM, then use the Sylink file to establish communication between the new SEPM and the existing SEP client through sylink replacer tool.

Note : Sylink replacer tool is most commonly used option because it's easy to use.

Please go through following thread for more details:

https://www-secure.symantec.com/connect/forums/migration-clients-other-server-sepm#comment-5229601

simple, follow the DR steps of SEP 12.1

http://www.symantec.com/docs/TECH160736

upgrade the server to Windows 2008 and then follow the DR steps to restore the SEPM certifcates & database .Clients will communicate to the SEPM.

Hi,

Please go through following thread.

https://www-secure.symantec.com/connect/forums/sep-11-full-migration-one-server-another#comment-5506111

Hello,

Check this Thread:

best way to upgrade SEPM and OS

https://www-secure.symantec.com/connect/forums/best-way-upgrade-sepm-and-os

Hope that helps!!