HP Virtual Connect for c-Class BladeSystem Setup and Installation Guide

HP Virtual Connect Manager 79
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.