I recently helped a customer who received the following error upon installing the Dell Management Plug In for VMware vCenter appliance:
Error: The OVF package is invalid and cannot be deployed.
Message: Network card "VirtualE1000" has a DVPort backing, which is not supported. This could be because the host does not support VDS or because the host has not joined a VDS.
Upon further research, we determined that ESXi host the appliance is being put on can not be part of a virtual distributed switch (VDS).
The Fix: remove the ESXi host from the VDS, add the appliance, then re-join the host to the VDS as needed.
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