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Preparing Your Systems for Clustering 43
Zoning automatically and transparently enforces access of information to the
zone devices. More than one PowerEdge cluster configuration can share
Dell/EMC storage system(s) in a switched fabric using Fibre Channel switch
zoning and with Access Control enabled. By using Fibre Channel switches to
implement zoning, you can segment the SANs to isolate heterogeneous
servers and storage systems from each other.
Using Zoning in SAN Configurations Containing Multiple Hosts
Using the combination of zoning and Access Control in SAN configurations
containing multiple hosts, you can restrict server access to specific volumes
on a shared storage system by preventing the hosts from discovering a storage
volume that belongs to another host. This configuration allows multiple
clustered or nonclustered hosts to share a storage system.
Using Worldwide Port Name Zoning
PowerEdge cluster configurations support worldwide port name zoning.
A worldwide name (WWN) is a unique numeric identifier assigned to Fibre
Channel interfaces, such as HBA ports, storage processor (SP) ports, and
Fibre Channel to SCSI bridges or storage network controllers (SNCs).
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
50:06:01:6
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