Cisco Nexus 5000 Series Switch Fabric Manager Software Configuration Guide, NX-OS 4.0 (OL-16598-01, June 2008)

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Nexus 5000 Series Switch Fabric Manager Software Configuration Guide
OL-16598-01
Chapter 17 Distributing Device Alias Services
Database Merge Guidelines
To change whether Fabric Manager uses FC aliases or global device aliases, perform this task:
Step 1 Click Server > Admin.
You see the Control Panel dialog box with the Fabrics tab open (see Figure 17-4).
Figure 17-4 Control Panel Dialog Box
Step 2
Check the FC Alias check box to use FC aliases or uncheck to use global device aliases for each fabric
that you are managing with Fabric Manager Server.
Step 3 Click Apply to save these changes.
Database Merge Guidelines
When merging two device alias databases, follow these guidelines:
• Verify that two device aliases with different names are not mapped to the same pWWN.
• Verify that two identical pWWNs are not mapped to two different device aliases.
• Verify that the combined number of device aliases in both databases does not exceed 8K (8191
device aliases) in fabrics running Cisco MDS SAN-OS release 3.0 (x) and earlier, and 20K in fabrics
running Cisco MDS SAN-OS release 3.1(x) and later.
If the combined number of device entries in both databases exceeds the supported configuration
limit, then the merge will fail. For example, if database N has 6000 device aliases and database M
has 2192 device aliases, and you are running SAN-OS 3.0(x) or earlier, then this merge operation
will fail. Merge operations will also fail if there is a device alias mode mismatch.
For additional information, see the “CFS Merge Support” section on page 7-6.