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Status Delivered
Created by Guest
Created on Mar 6, 2020

The creation of vFC adapters with automatic generation of the vWWNs should check, if the vWWNs to be assigned are not alread

The creation of vFC adapters with automatic generation of the vWWNs should check, if the vWWNs to be assigned are not already in use, at least on the Managed Systems managed by the same HMC.

Idea priority Medium
  • Guest
    Apr 2, 2020

    Please see comments in previous sequence. If the changes mentioned doesn't address your requirement, please re-open with more info.

  • Guest
    Mar 26, 2020


    The auto generation of WWPN's is done by the Hypervisor currently. From FW930, there has been an enhancement to check duplicate WWPN's when a new wwpn is autogenerated i.e., if the user assigned two WWPNs manually, and then later let auto-pick two WWPNs, Hypervisor will attempt (32 times) to find a non-duplicate pair of WWPNs based on its WWPN root. If it is successful, Hypervisor will give non-duplicate WWPNs. If PHYP tries 32 pairs and cannot find a non-duplicate, Hypervisor will fall back to its pre-FW930 behaviour of assigning a duplicate. With this enhancement auto generation of WWPN's will try to avoid duplicate with an existing assigned wwpn within a system. Please note that the check during auto-generation is done against the wwpn's assigned to the adapters at lpar level and not at profile level. Does this address your requirement?