A customer has an HPE StoreOnce 4500 with a single VTL with eight tape drives. During the backup cycle,
they experience errors where are no devices available.
Which actions allow for more devices to be available to the backup server? (Choose two.)

A.
Upgrade to the HPE StoreOnce 4900.

B.
Add more tape drives in the HPE StoreOnce VTL currently in use.

C.
Add more storage to the HPE StoreOnce 4500.

D.
Create more VTLs and tape drives to allow for more backup devices.

E.
Move all of the backups from VTLs to NAS.