You should have the Same IP Address and Server Name as of the old server.
If you have a Embedded Database:
>You will be able to achieve this only if you have copied the Server Private Key Backup folder and a recent back up done.
>Goto the Backup and Restore Wizard and do a restore of the database.
>Go to Admin Tab -> Server -> Click on the server name -> Click on Manage Server Certificate
>Import the Server Private Key file (.jks)
>For the other two fields open the Server.xml file and find for "KeystorePass", Copy the value and paste it for both fields.
>Run the Managment Server configuration Wizard.
>The clients must start to communicate.
If you have a SQL Database
>Get the copy of Server private key backup folder from the location
C:/Program files/Symantec/Symantec Endpoint Protection Manager/Server Private Key Backup
>Run the Managment Server configuration Wizard.
>Point the wizard to the SQL database -> sem5
>Update the Server Private key the same way given above.
>The clients must start to communicate.
Use the following link for reference:
http://www.symantec.com/business/support/index?page=content&id=TECH104389