Texas Memory Systems RAM-SAN 520 manual Creating LUN Masks

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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)

4-4

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Contents RAM-SANTM Table of Contents Specifications Overview E.S.D. Warning InstallationConnecting to the management port InspectionPower-Up Connecting the Fibre Channel PortsSystem Tests Inside the RAM-SAN PowerUnderstanding Your RAM-SAN Interface Slot NumberingConfiguration Board and LEDs Top-down View of RAM-SAN Internals Front Panel DisplayRAM-SAN Front Panel RAM-SAN User’s Guide Texas Memory Systems, Inc. February 7 RAM-SAN Monitor Configuring the RAM-SANConfiguring the Ethernet Port Configuring LunsWorked Example on Changing the RAM-SAN Configuration Attaching Fibre Channel Ports to the LUNs Resizing LUNsCreating LUN Masks Saving the Configuration to Flash RAM Help TestmemErrchat on/off Exit quitReset port IpconfigPassword Reboot hard/softStatus port Troubleshooting Management Port Fails to BootBasic Items to Check Does Not Accept Character Input Boot Sequence Does Not CompleteRAM-SAN Boots Incorrectly 1 MCP21 Does Not Display CharactersLocating a Bad Memory Board Catastrophic Boot Error DetectedRAM-SAN Does Not Detect all Devices Finding Bad MemoryConfiguration LED Stays Lit Confidence Diagnostic, DIAGMEM, FailsHow to Contact Us ECC Errors DetectedOperating Environment SpecificationsPhysical Characteristics WarrantyRAM-SAN User’s Guide Texas Memory Systems, Inc. February 7