HP Virtual Connect 4Gb Fibre Channel Module for c-Class BladeSystem - Manual (Page 115)

Configuring the Virtual Connect domain using the CLI 115
Fibre Channel setup
To configure external Fibre Channel connectivity for the HP BladeSystem c-Class enclosure, do the following:
1. Identify WWNs to be used on the server blades deployed within this Virtual Connect Domain.
2. Define SAN fabrics.
Configuring WWN address ranges
• VC-Defined
>set domain WwnType=VC-Defined WwnPool=5
• Factory-Default
>set domain WwnType=Factory-Default
Each server blade FC HBA mezzanine card ships with factory default port and node WWNs for each FC
HBA port. Each WWN is a 64-bit number that uniquely identifies the FC HBA port/node to other devices on
the network. While the hardware ships with default WWNs, Virtual Connect has the ability to assign WWNs
that will override the factory default WWNs while the server remains in that Virtual Connect enclosure.
When configured to assign WWNs, Virtual Connect securely manages the WWNs by accessing the
physical FC HBA through the enclosure Onboard Administrator and the iLO interfaces on the individual
server blades.
When assigning WWNs to a FC HBA port, Virtual Connect will assign both a port WWN and a node
WWN. Because the port WWN is typically used for configuring fabric zoning, it is the WWN displayed
throughout the Virtual Connect user interface. The assigned node WWN is always the same as the port
WWN incremented by one.
Configuring Virtual Connect to assign WWNs in server blades maintains a consistent storage identity
(WWN) even when the underlying server hardware is changed. This method allows server blades to be
replaced without affecting the external Fibre Channel SAN administration.
CAUTION: To avoid storage networking issues and potential loss of data associated with
duplicate WWNs on a FC SAN fabric, plan carefully when allowing Virtual Connect to assign
server blade WWNs so that the configured range of WWNs is used only once within the
environment.
The WWN range used by the Virtual Connect domain must be unique within the environment. HP provides
a set of pre-defined ranges that are reserved for use by Virtual Connect and will not conflict with server
factory default WWNs.
When using the HP-defined WWN ranges, be sure that each range is used only once within the environment.
Displaying FC fabrics
To display a list of all FC SAN fabrics, use the show fabric command:
>show fabric
Serial number (logical) settings
Virtual Connect Manager can be configured to use logical serial numbers and logical UUIDs with a server
profile regardless of the type of physical server. With these configuration values, software licensed with one
or both of these values can be migrated to new hardware without re-licensing.