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  • 1.  WSFC RDMs perennially reserved

    Posted Aug 25, 2021 06:38 AM

    Hello
    Should I set all RDMs in a cluster to perennially reserved or only the WSFC RDMs?
    We always flagged only the WSFC RDMs.

    https://blogs.vmware.com/virtualblocks/2020/07/31/using-perennially-reserved-flag-wsfc-rdms/

    Regards



  • 2.  RE: WSFC RDMs perennially reserved

    Posted Aug 25, 2021 08:55 AM

    From what I understand, it's only for RDMs that are used for guest clusters.
    KB https://kb.vmware.com/s/article/1016106 explains this.

    André



  • 3.  RE: WSFC RDMs perennially reserved

    Posted Aug 25, 2021 12:18 PM

     
    Yes. That is what I know.
    WSFC RDMs should be flagged perennially reserved all other RDMs not.
    But I am not shure about it.



  • 4.  RE: WSFC RDMs perennially reserved
    Best Answer

    Posted Aug 25, 2021 12:51 PM

    The "Cause" section within the KB article actually explains it.

    ~snip~
    This issue occurs when a cluster is running virtual machines participating in an MSCS/WSFC using shared RDMs and SCSI Reservations across hosts, and a virtual machine on another host is the active cluster node holding a SCSI Reservation.
    ~snip~

    André