Dell EMC AX4-5 manual Single Initiator Zoning, Port Worldwide Names in a SAN Environment

A WWN consists of an 8-byte hexadecimal number with each byte separated by a colon. For example, 10:00:00:60:69:00:00:8a is a valid WWN. Using WWN port name zoning allows you to move cables between switch ports within the fabric without having to update the zones.

Table 3-1 provides a list of WWN identifiers that you can find in the Dell/EMC cluster environment.

Table 3-1. Port Worldwide Names in a SAN Environment

Identifier	Description
xx:xx:00:60:69:xx:xx:xx	Dell/EMC or Brocade switch
xx:xx:xx:00:88:xx:xx:xx	McData switch
50:06:01:6x:xx:xx:xx:xx	Dell/EMC storage processor
xx:xx:00:00:C9:xx:xx:xx	Emulex HBA ports
xx:xx:00:E0:8B:xx:xx:xx	QLogic HBA ports (non-embedded)
xx:xx:00:0F:1F:xx:xx:xx	Dell 2362M HBA port
xx:xx:xx:60:45:xx:xx:xx	PowerVault 132T and 136T tape
	libraries
xx:xx:xx:E0:02:xx:xx:xx	PowerVault 128T tape autoloader
xx:xx:xx:C0:01:xx:xx:xx	PowerVault 160T tape library and Fibre
	Channel tape drives
xx:xx:xx:C0:97:xx:xx:xx	PowerVault ML6000 Fibre Channel
	tape drives

WARNING: When you replace a switch module, a storage controller, or a Fibre Channel HBA in a PowerEdge server, reconfigure your zones to provide continuous client data access.

Single Initiator Zoning

Each host HBA port in a SAN must be configured in a separate zone on the switch with the appropriate storage ports. This zoning configuration, known as single initiator zoning, prevents different hosts from communicating with each other, thereby ensuring that Fibre Channel communications between the HBAs and their target storage systems do not affect each other.

When you create your single-initiator zones, follow these guidelines:

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Preparing Your Systems for Clustering