Thank you for your comments. Yes, it is promising. The NetBackup client is a daemon, which listens on specific ports for the backup server to initiate backups, and are then spooled over the network to the backup server.
I'm an e-smith SME-server newbie, just wondering if I have to do anything special within the SME architecture with regard to either new daemon precess(es), or opening ports for the backup server's communication.