Adding a robot / tape drive writes to our environment

Hi,

I have a Netbackup 7.5 Enterpise environment, currently using Data Domain. We've had a TLD robot with one tape drive (so far) added to the environment but I need help on how to proceed. 

We have a mixed Windows / Unix environment. The robot control host is a Unix server that is already configured as a Data Domain media server that currently only backs itself up. I have added the robot to Netbackup using the Configure Storage Devices wizard. The ultimate purpose of this robot will be to act as the final stage of our backup process: 1) write backup to local Data Domain, 2) replicate to remote data domain on 2nd site, 3) write production backups for long-term retention to tape. 

Where do I go from here? What I want is for a media server - not necessarily the one that is the robotic control host - to be able to read data from Data Domain and write it to the robot/tape. I assume this will be the final stage of an SLP used for a backup policy. 

At the moment I don't even know how to make any media server write to tape. For Data Domain I do the following:

• Create a storage unit on Data Domain and add one media server to it. 
• Create an SLP for the storage unit that duplicates to a matching storage unit on the remote data domain
• Install the DDBoost plugin to the media server then run the commands to configure it to write to Data Domain:
  • nbdevconfig -creatests -stype DataDomain -storage_server [data_domain_box] -media_server [media_server]
  • tpconfig -add -storage_server [data domain box] -stype DataDomain -sts_user_id ostuser -password password

....and I'm good to go. 

If I want to make the current robotic control host (which obviously can see the robot on the san fabric) write it's own data to a tape, what do I need to do?

From there, how do I configure a replication to tape from Data Domain? I've scoured through the standard documentation but can't find any useful info on how to put this together. 

Thanks!