In a DR scenario, you would be restoring the DB on a new SEPM with same IP and Name with keystroke. all these activities are only on SEPM. no need to touch each individual.
other method is to use replication. You can have sepm on two different servers, server1 with priority 1 so that all clients talk to this SEPM. incase of failure clients would fall back to server2 with priority 2
Disaster recovery best practices for Symantec Endpoint Protection 12.1
http://www.symantec.com/business/support/index?page=content&id=TECH160736
Configuring a management server list
http://www.symantec.com/business/support/index?page=content&id=HOWTO55402