Hi,
in any case, attaching physical devices to a virtual machine is not supported to work with Data Protector (except for iSCSI devices - like VTL's in StoreOnce) and thats for a good reason. To get this work you would need special controller card (not supported in HP ProLiant servers), you cannot assign the robotic to the virtual machine, etc.
The error message your screen shot displayed is an I/O error.
To get the problem solved you need to connect the physical device to a physical server.
Best regards
Daniel