nStor NexStor 4200F Series, User Manual

Page: 113 / 174

Chapter 3 - Setup and Installation
A Word About LUN Mapping
101
A Word About LUN Mapping
The configuration software allows you to sequentially map LUN numbers to
logical drives. The controller(s) use the World Wide Name (WWN) to uniquely
identify host computers that have logged into the controller.
A list of valid hosts and their corresponding WWNs is provided in the software in
order to configure the host to LUN mapping. Once logical drives are configured,
the controller maintains a table of WWNs for each logical drive. This table defines
the hosts that are granted access to each logical drive and the controller port and
the LUN number. Referring to “Topologies and Operating Modes” on page 21,
each operating mode and topology diagram illustrates which controller port is
connected to which HBA. This will assist you when performing the LUN mapping
process.
Refer to the software user’s guide for more information on configuration and LUN
mapping.
4200F.book Page 101 Thursday, January 23, 2003 2:47 PM