HP A7533A HP StorageWorks Fabric OS 5.2.x administrator guide (5697-0014, May - Page 366
Table 88 Considerations for Zoning architecture, Interoperability Fabric
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Table 88 Considerations for Zoning architecture Item Type of Zoning: hard or soft (session-based) Description If security is a priority, hard Zoning is recommended. Use of aliases Security requirements Interoperability Fabric The use of aliases is optional with Zoning. Using aliases requires structure when defining zones. Aliases will aid administrators of zoned fabric in understanding the structure and context. Evaluate the security requirements of the fabric. If additional security is required, add Secure Fabric OS into the 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 QuickLoop Fabric Assist (QLFA) or QuickLoop (QL) in it, and consider the following items before creating and setting up QLFA zones: QuickLoop Zoning-QuickLoop/QuickLoop zones cannot run on Fabric OS v4.1.0 or later. However, Fabric OS can manage (create, remove, update) QL zones. QuickLoop Fabric Assist-A switch running Fabric OS v4.1.0 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 Effect of changes in a production fabric Confirming operation Testing a (new) zone configuration. Before implementing a zone, the user should run the Zone Analyzer from Web Tools to isolate any possible problems. This is especially useful as fabrics increase in size. 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, it is recommended to perform zone changes only when the resulting behavior is predictable and acceptable. Changing HBA drivers can rectify the situation. After changing or enabling a zone configuration, the user should confirm that the nodes and storage are able to identify and access one another. Depending on the platform, the user might need to reboot one or more nodes in the fabric with the new changes. 366 Administering Advanced Zoning
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