1. Move the Media server's DB to Master (Old NT4.0)
2. From the Master Server, remove all the configuration related to that Media server includes tape drive config. and STU.
3. Restart the NBU services "Master". If this is a SAN Media server, you need to restart all the SAN media server's services.
4. Create two catalog copies, one to tape and the second on to disk.
5. Shutdown the NT4.0 Master Server(Remove it from the network).
6. Uninstall NBU media server software.
7. Rename the hostname (same as the Old NT4.0 Hostname)
8. Reboot, Re-Join the Domain, reboot, and Install the NBU Master software.
9. From NBU consol, create a robot, tape drive, and invertory the library.
9. Use bprecover command to recover the NBU Catalog
10. Re-mapping all the tape drives.
11. Restart the services.