HP Virtual Connect 4Gb Fibre Channel Module for c-Class BladeSystem - Manual (Page 146)

Configuring the Virtual Connect domain using the CLI 146
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
>set domain WwnType=VC-Defined WwnPool=5
• Factory default
>set domain WwnType=Factory-Default
Creating FC fabrics
To create a FabricAttach FC SAN fabric and add it to the domain, use the add fabric command:
>add fabric MyFabric2 Bay=3 Ports=1 Speed=2Gb
To create a DirectAttach fabric for a FlexFabric module and add it to the domain, use the add fabric
command:
>add fabric MyFabric5 Bay=3 Ports=1,2 Type=DirectAttach
For more information about Virtual Connect fabrics, see the HP Virtual Connect for c-Class BladeSystem User
Guide on the Installing tab of the HP BladeSystem Technical Resources website
( http://www.hp.com/go/bladesystem/documentation ).
Displaying FC fabrics
To display a list of all FC SAN fabrics, use the show fabric command:
>show fabric
Serial number settings
The serial number settings feature enables you to add a serial number and UUID to server profiles. The UUIDs
that Virtual Connect assigns are randomly generated. A UUID pool is not required.