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Status Future consideration
Workspace IBM i
Categories PowerHA
Created by Guest
Created on Feb 4, 2022

vdisk_protection_enabled in IBM i PowerHA environments

This is the corresponding RFE to RFE number 141546 but for IBM i side.
Spectrum Virtualize (be it flashsystems or SVC) introduced feature to restrict LUNS from being unmapped or deleted from storage when there was I/O in last XX minutes.
This feature (if enabled) breaks PowerHA IASP switchovers as a HOST<->LUN unmap is done, which cannot be done because there were IOs.

Spectrum Virtualize came up with solution to disable volume protection based on pools/child pools. So one could put IASP LUNs in child-pool, turn off volume protection for this pool to allow PowerHA operations but also activate volume protection for all other LUNs in other pools.

Current PowerHA versions run a check on either cluster start or CRG start to check if volume protection is activated or not. But this check only verifies system, not individual pool settings.
Following message can be found in joblog:
IBM Spectrum Virtualize Volume Protection is enabled. PowerHA is unable to use LUN-Level Switching.

So please extend PowerHA verification to check setting of system & pool for vdisk protection.


Use Case:

PowerHA would work in a mixed vdisk protection en-/disabled environment.


Idea priority High
  • Guest
    May 24, 2022

    The CEAC has reviewed this requirement and recommends that IBM view this as a MEDIUM priority requirement that should be addressed. Having a solution to meet this need seems like a good idea. However, we have voted medium as we would like IBM to focus on other prioriries at this time.

    Background: The COMMON Europe Advisory Council (CEAC) members have a broad range of experience in working with small and medium-sized IBM i customers. CEAC has a crucial role in working with IBM i development to help assess the value and impact of individual RFEs on the broader IBM i community and has therefore reviewed your RFE.

    To find out how CEAC help to shape the future of IBM i, see CEAC @ ibm.biz/BdYSYj and the article "The Five Hottest IBM i RFEs Of The Quarter" at ibm.biz/BdYSZT

    Sabine Jordan + Sara Andres – CEAC Program Manager, IBM

  • Guest
    Feb 10, 2022

    The PowerHA team will use this request as input to planning but no commitment is made or implied. The request will be updated in the future if the request is implemented. The PowerHA team will use votes and comments from others in the community to help prioritize this request.