Fibre channel setup, Configuring wwn address ranges – HP Virtual Connect 4Gb Fibre Channel Module for c-Class BladeSystem User Manual
Page 164
Configuring the Virtual Connect domain using the CLI 164
forced to use the same VLAN mappings as the shared uplink sets. Setting the value to "true" restricts the server
network connections to be selected from a single shared uplink, and the VLAN ID cannot be modified:
>set enet-vlan SharedServerVLanID=true
Setting the value to "false" enables you to select any VC Ethernet network for the server Ethernet connections,
and VLAN ID mappings can be modified to ensure uniqueness:
>set enet-vlan SharedServerVLanID=false
When using mapped VLAN tags, the overall link speed can be controlled as follows:
>set enet-vlan PrefSpeedType=Custom PrefSpeed=500 MaxSpeedType=Custom
MaxSpeed=2500
Fibre Channel setup
To configure external Fibre Channel connectivity for the HP BladeSystem c-Class enclosure:
1.
Identify WWNs to be used on the server blades deployed within this Virtual Connect domain.
2.
Create FC SAN fabrics ("
" on page
Configuring WWN address ranges
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 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 FC HBA ports, Virtual Connect assigns 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.
Virtual Connect assigns or migrates WWNs for server FC ports connected to HP Virtual Connect modules.
Virtual Connect also assigns WWNs to FC ports that are not connected to an I/O module because Virtual
Connect modules can be added later. Server FC ports connected to non-Virtual Connect modules retain the
server factory default WWNs.
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 do 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.
To configure WWN address ranges, use the set domain command:
•
VC-defined