VMs with Delta Disks Cannot be Protected

Issue

If a VM to be protected does not have any snapshots, but delta disks for it exist (e.g., a VM snapshot was successfully removed but its disk consolidation failed), attempting to protect the VM may initially appear to work, but the protection task will eventually fail.

Cause

This is a technical limitation of the system. Your DR protection strategy should be designed to avoid conditions where this issue will be problematic.