Examples

   1.$ SET PREFERRED_PATH $10$DUA10: /HOST=HSC014

     Prior to issuing this command, the $10$DUA10: disk device
     has host HSC015 as its primary path and host HSC014 as its
     secondary path. Issuing this command selects host HSC014 as the
     preferred path.

     Note that the preferred path has been recorded by the class
     driver; however, the disk will remain on the current path
     (HSC015) until the next time the path selection process is
     initiated.

   2.$ SET PREFERRED_PATH $10$DUA10: /HOST=HSC014 /FORCE

     To make the path change occur immediately, include the
     /FORCE qualifier on the command line with the preferred path
     specification.

   3.$ SET PREFERRED_PATH $10$DUA10: /FORCE

     Issue this command to initiate path selection processing if
     the specified device has a primary path that differs from the
     preferred path.

     If the preferred path is available, the device moves to that
     path.

   4.$ SET PREFERRED_PATH $10$DUA10: /NOHOST

     Remove the specified preferred path by using the /NOHOST
     qualifier if the device should no longer have a preferred path.