The invention provides an improved storage area network (SAN) of the type having
a digital data processor, e.g., a host, in communication with one or more storage
devices, e.g., a LUN and, further, of the type having a plug-and-play (PNP) manager
that generates an event in response to a change in status of at least one of the
storage devices. The improvement is characterized by at least a selected process,
that executes on the host (or other digital data processor) and that references
at least a selected one of the storage devices using a previously assigned logical
identification, e.g., a LUN ID. The improvement is further characterized by the
selected process responding to an event generated by the plug-and-play by querying
for information the storage device (or an interface thereto) with respect to which
the event was generated. From that information, the process generates a logical
identification for the device.
