Enter the LUN number: 1

Enter the Fibre Channel port: 5

Command (h for help): l

Enter the LUN number: 2

Enter the Fibre Channel port: 5

Command (h for help): l

Enter the LUN number: 3

Enter the Fibre Channel port: 9

Command (h for help): p

Enter the LUN number (1-3, default is all): <enter> LUN 1 -- 3072 Mb

ports: 5

access: Open access LUN 2 -- 3072 Mb

ports: 5

access: Open access LUN 3 -- 2048 Mb

ports: 9

access: Open access Command (h for help):

From the last command, we can see that the port five has been assigned to LUN one and three, and port nine has been assigned to LUN two and three. Since we are sharing a port between two LUNs, we need to specify a LUN mask so that the HBA will only be able to access the desired LUN.

4.3.4 Creating LUN Masks

The next configuration option available to the RAM-SAN is the ability to create LUN Masks for individual Fibre Channel ports. This allows the administrator to specify which HBAs are allowed to communicate with each LUN. The ‘a’ command will add a world wide name to a LUN’s access list, activating the masking of that LUN to all other HBAs. The following command sequence will add all four world wide names to our LUN mask.

Command (h for help): a

Enter LUN number: 1

Enter the world wide name (colon delineated): 11:11:11:11:11:11:11:11

Command (h for help): a

Enter the LUN number: 2

Enter the world wide name (colon delineated): 22:22:22:22:22:22:22:22

Command (h for help): a

Enter the LUN number: 3

Enter the world wide name (colon delineated): 33:33:33:33:33:33:33:33

Command (h for help): a

Enter the LUN number: 3

Enter the world wide name (colon delineated): 44:44:44:44:44:44:44:44

Command (h for help): p

Enter the LUN number (1-3, default is all): <enter> LUN 1 -- 3072 Mb

ports: 5

access: 11:11:11:11:11:11:11:11 LUN 2 -- 3072 Mb

ports: 5

access: 22:22:22:22:22:22:22:22 LUN 3 -- 2048 Mb

ports: 9

access: 33:33:33:33:33:33:33:33 44:44:44:44:44:44:44:44

Command (h for help):

RAM-SAN User’s Guide

Texas Memory Systems, Inc. (February 7, 2003)

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Texas Memory Systems RAM-SAN 520 manual Creating LUN Masks