Need Netbackup license name for Data Domain(openstorage)

HI,

Currently we are using VTL(EMC) to take backups with Netbackup 7.0.1. VTL is going to be unsupported in another 2 months instead we are replacing the EDLs with Data Domains. Here i would like to know whether VTL license can be used for Data Domain. if not, What license needs to be added for Data Domain in netbackup.? Can anyone he