Backup Exec 2012 What do I need to backup on the server its self and how to test restore

Hello,

We run 1 server that backups all of our server.  We use backup exec 2012 on this server with all the latest patches.  It is running on a Windows 2008 server.

We utilize B2D, Deduplicated storage and a Dell tape library.

I need to know what specific data/directories do I needs to backed up on the backup exec server in order to recover the environment in a situation when we lose the backup server its self?

What would be the recovery procedure?

Is there an easy way of testing this recovery procedure?

I thank you for all your help

-NimaJ