HP Hitachi Dynamic Link Manager Software - Manual (Page 29)

1. Overview of HDLM
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HDLM can utilize both configuration-diagrams and the list format to display
information about all the paths that exist between hosts and Hitachi storage
systems. You can use the GUI to easily change the status of any given path, and
to set up a proper operating environment.
For details on the HDLM GUI, see the HDLM GUI Help.