Your task is to develop a backup to disk solution for Certkiller .com. After an initial analysis, you decide to include one DL720 to be used as the primary backup device. The customer has been using a physical library with DLT8000 drives for many years and would like to have the capability to recover from the old tapes. The solution must result in the fewest possible changes to the backup server.
How can you best address these requirements?

A.
Connect the existing physical library to the back-end of the DL720. Create a virtual library and virtual tape drives matching the physical drive types.

B.
Install the IP Replication agent on the backup server that controls the physical library.
Copy all physical tapes over the network to virtual tapes on the DL720.

C.
Have the DL720 and the physical library connected to the SAN, so both will be visible from the backup software perspective.

D.
Create a separate environment in an offsite location to be used for recovery purposes only. Connect the physical library to this new environment and make all physical tapes available at the same location.