HP XP Array Manager Software - Manual (Page 216)

About managing WWNs by using nicknames
Each host bus adapter (HBA) has a unique World Wide Name (WWN) identifier that consists of a
64-bit physical address. The purpose of specifying WWN nicknames is to easily identify accessible
HBAs that are registered in a host group.
If one HBA WWN belongs to multiple host groups, you can set a nickname in the WWN information
that is defined for each host group. WWN nicknames that are specified for a host group can provide
information about the I/O path (host, host port, fabric, or storage port) of volumes that are linked to
the host group.
During configuration of SAN fabrics and paths, the HBA WWN nickname helps you confirm physical
configuration information. You can:
• Check the storage HBA WWN nicknames in the list of volumes.
• Specify or change the storage HBA WWN nicknames related to the host.
• View the HBA WWN nickname to confirm that the host port of the path to which a volume will
be allocated is appropriate.
• Change the storage configuration, such as replacing an HBA and specifying the nickname for the
replacement storage HBA WWN that is registered in the host group.
The following figure illustrates the WWN nicknames created using the host name, slot number, and
HBA port.
WWN nickname examples:
• (Host Name)_(Slot Number)_(HBA Port)
• (Host Name)_(Slot Number)_(Fabric Number)
• (Host Name)_(Slot Number)_(Fabric Number)_(Port Number)
There are two options for editing a WWN nickname that is defined in a host group:
• Collectively edit the WWN nickname for all related host groups. When this option is selected, the
WWN nickname is applied to all host groups that have the same WWN.
• Edit the WWN nickname of an individual host group. When this option is selected, only the WWN
nickname of the individual host group is changed.
Managing storage system information 216