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40 Preparing Your Systems for Clustering
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.
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:
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
50:06:01:6
x: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