I'm also not getting Thin to Thin backups. I have vSphere 6 Essentials. All the hosts have the VD service installed (CBT active). I'm backing up from an NFS source to an NFS target but the target is getting filled with thick allocated VMDKs. A server with 14Gb of used space is taking the full 100Gb of storage (and the time to process 100Gb even though 85% is empty). Thoughts?