Compaq Infortrend Manuale Utente

To create LUN masks, select "View and Edit Host LUNs" from the
Main Menu, then select a host data path (channel-ID combination).
In active-to-active mode, selecting a host channel means selecting
either the Primary or the Secondary controller I/O path.

Before mapping host LUNs, you may add host adapter port names
to a WWN name list to combine with a nickname given to each
adapter.  Names will be recorded in controller NVRAM.

A named adapter (by location or the nature of host applications) can
be easily identified and later combined with filtering masks.