To support spanning backups in basic disk storage unit groups, what needs to be performed?

A. Enable unrestricted media sharing, in the host properties.
B. Configure the storage unit selection: Spanning.

C. Allow backups to span disks, in the host properties.

D. Ensure each basic disk storage unit is configured on a separate media server.

Explanation:
Configure Allow backups to span disks in the media server host properties. Ensure that all the basic disk storage unit is configured on the same media server.