Dell PowerVault 775N (Rackmount NAS Appliance) - Manual (Page 65)

Using Zoning in SAN Configurations Containing Multiple Hosts
Using the combination of zoning and Access Logix 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 device that
belongs to another host. This configuration allows multiple clustered or nonclustered hosts from sharing a storage system.
Using Worldwide Port Name Zoning
NAS cluster configurations support worldwide port name zoning.
A world wide name (WWN) is a unique numeric identifier assigned to Fibre Channel devices, such as HBAs, SPs, and SCSI to
Fibre Channel bridges.
A WWN consists of an 8-byte hexadecimal number with each byte separated by a colon. For example, 10:00:00:60:69:00:8a
is a valid WWN. Using WWN port name zoning allows you to move cables from port-to-port within the switch fabric without
having to update the zones.
Table 5-4 provides a list of WWN identifiers that you can find in the Dell | EMC cluster environment.
Table 5-4. Port Worldwide Names in a SAN Environment
Identifier Description
xx:xx:00:60:69:xx:xx:xx Dell | EMC or Brocade switch
50:06:01:6x:xx:xx:xx:xx Dell | EMC storage processor
xx:xx:00:00:C9:xx:xx:xx Emulex LP9002L and LP982 HBAs
xx:xx:00:E0:8B:xx:xx:xx QLogic QLA2340 HBA
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:00:88:xx:xx:xx
McData switch
NOTICE: You must reconfigure the zones if you have replaced Fibre Channel storage components, such as Fibre
Channel HBAs or switches. Failure to reconfigure the zones may cause data loss or data corruption.
NOTICE: You must configure your zones before you configure the paths and LUNs. Failure to do so may cause data
loss, data corruption, or data unavailability.
Single Initiator Zoning
Each HBA in a SAN must be configured in a separate zone with the storage ports on the switch. This zoning configuration,
known as single initiator zoning, prevents heterogeneous HBAs from communicating with each other, thereby ensuring that
Fibre Channel communications between the HBAs and their target storage systems do not affect one another.
When you zone your HBAs, follow these guidelines:
Create a zone for each HBA and its target storage devices.
Each CX200 storage processor can be connected to a maximum of 15 HBAs in a SAN-attached environment
Each CX400 storage processor port can be connected to a maximum of 15 HBAs in a SAN-attached environment
Each CX600 storage processor port can be connected to a maximum of 32 HBAs in a SAN-attached environment.