The third-party driver (TPD) coexistence feature of VxVM allows I/O that is controlled by some third-party multipathing drivers to bypass DMP while retaining the monitoring capabilities of DMP. If a suitable ASL is available and installed, devices that use TPDs can be discovered without requiring you to set up a specification file, or to run a special command. In previous releases, VxVM only supported TPD coexistence if the code of the third-party driver was intrusively modified. The new TPD coexistence feature maintains backward compatibility with such methods, but it also permits coexistence without require any change in a third-party multipathing driver.