Format: UNBIND dad-device

Unbinds a DAD device from a service name and deletes the device.  This
command breaks any existing connections for the DAD device and deletes
it when all channels to the device have been deassigned.

You cannot UNBIND a device that is mounted.  Once a DAD device has
been mounted, you must use the VMS command DISMOUNT/UNLOAD to delete
the DAD device.

Additional information available:

example

        UNBIND DAD3:

This command disassociates DAD3: from the service name assigned
using the BIND command.  The UNBIND command also deletes the device.