Dell EMC AX4-5 Hardware Installation And Troubleshooting Manual

40 Preparing Your Systems for ClusteringA WWN consists of an 8-byte hexadecimal number with each byte separatedby a colon. For example, 10:00:00:60:69:00:00:8a is a valid WWN. UsingWWN port name zoning allows you to move cables between switch portswithin the fabric without having to update the zones.Table 3-1 provides a list of WWN identifiers that you can find in theDell/EMC cluster environment.WARNING: When you replace a switch module, a storage controller, or a FibreChannel HBA in a PowerEdge server, reconfigure your zones to provide continuousclient data access.Single Initiator ZoningEach host HBA port in a SAN must be configured in a separate zone on theswitch with the appropriate storage ports. This zoning configuration, knownas single initiator zoning, prevents different hosts from communicating witheach other, thereby ensuring that Fibre Channel communications betweenthe HBAs and their target storage systems do not affect each other.When you create your single-initiator zones, follow these guidelines:Table 3-1. Port Worldwide Names in a SAN EnvironmentIdentifier Descriptionxx:xx:00:60:69:xx:xx:xx Dell/EMC or Brocade switchxx:xx:xx:00:88:xx:xx:xx McData switch50:06:01:6x:xx:xx:xx:xx Dell/EMC storage processorxx:xx:00:00:C9:xx:xx:xx Emulex HBA portsxx:xx:00:E0:8B:xx:xx:xx QLogic HBA ports (non-embedded)xx:xx:00:0F:1F:xx:xx:xx Dell 2362M HBA portxx:xx:xx:60:45:xx:xx:xx PowerVault 132T and 136T tapelibrariesxx:xx:xx:E0:02:xx:xx:xx PowerVault 128T tape autoloaderxx:xx:xx:C0:01:xx:xx:xx PowerVault 160T tape library and FibreChannel tape drivesxx:xx:xx:C0:97:xx:xx:xx PowerVault ML6000 Fibre Channeltape drives