HP StorageWorks 2/16V HP StorageWorks Fabric OS 5.X Procedures User Guide (AA- - Page 198
Table 41 Considerations for zoning architecture, Description
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Table 41 lists considerations for zoning architecture. Table 41 Considerations for zoning architecture Item Description Type of zoning: hard or soft (session-based) If security is a priority, HP recommends hard zoning. Use of aliases The use of aliases is optional with zoning. Using aliases requires structure when defining zones. Aliases aid administrators of zoned fabric in understanding the structure and context. Security requirements Evaluate the security requirements of the fabric. If additional security is required, add HP Secure Fabric OS into the fabric. Interoperability Fabric If the fabric includes a third-party switch product, only WWN zoning is supported. Other types of zoning, including QuickLoop, are not supported. QLFA zones Evaluate if the fabric will have QLFA or QuickLoop in it, and consider the following items before creating and setting up QLFA zones: QuickLoop Zoning-QuickLoop and QuickLoop zones cannot run on Fabric OS 4.1.0 or later. However, Fabric OS can manage (create, remove, update) QuickLoop zones. QLFA-A switch running Fabric OS 4.1.0 or later cannot have a Fabric Assist host directly connected to it. However, such a switch can be part of a Fabric Assist zone if a Fabric Assist host is connected to a compatible switch in the fabric. Testing Testing a (new) zone configuration. Before implementing a zone, the user should run the Zone Analyzer from Advanced Web Tools to isolate any possible problems. This is especially useful as fabrics increase in size. Effect of changes in a production fabric Zone changes in a production fabric can result in a disruption of I/O under conditions where an RSCN is issued as a result of a zone change, and the HBA is unable to process the RSCN fast enough. Though RSCNs are a normal part of a functioning SAN, the pause in I/O might not be acceptable. For these reasons, HP recommends performing zone changes only when the resulting behavior is predictable and acceptable. Changing HBA drivers can rectify the situation. Confirming operation After changing or enabling a zone configuration, confirm that the nodes and storage are able to identify and access one another. Depending on the platform, you might need to reboot one or more nodes in the fabric with the new changes. 198 Administering advanced zoning