vSphere Data Protection can be configured to use a Data Domain system as a backup data target. The advantages of doing this include scale beyond vSphere Data Protection’s 8TB backup data storage capacity limit, global compression and deduplication, and backup efficiency using EMC Data Domain Boost software.  NOTE: vSphere Data Protection backup data storage capacity of 8TB refers to the amount of deduplicated backup data.
There is a 8TB License for VDP included, but what if I use a Datadomain. Can I only use 8TB of Datadomain capacity or is it different since I use Datadomain instead.
VDP licensing for Datadomain