Enterprise Disk License
What is the Enterprise disk license used for ?
I'm asking this question because I want to know why do I need that license because if the VTL will appear to my windows system in the end as a tape library so why do I need a license ? or this license is to make the netbackup aware that this is a disk so that the backup operation will be just faster ?? or this is wrong and the VTL without this option will not work at all ??
I'm trying to find any document about the license but I failed to reach any
Thanks & Best Regards,