The beauty of VCB is "LAN-Free", which eliminats the traditional backup window. You can back up your machine whenever you want, in theory. Also, yous ycan do image level backup which enables you to restore it in no time. With huge RDMs attached, the VM being backed up through VCB is becoming impossible (limit space on VCB Proxy) and the worst senario happened to me, the VM hung up and left LUNs unaccessible. (Big time!)

Eventually I put all my RDMs to "Independent Virtual Compatibility" mode, therefore VCB will skip those RDMs automatically and back up OS part only. Then I use regular DP agent to backup data part (RDMs), of course nightly.

Note: DP6.0 doesn't support VCB1.1, yet as I am writing this post.