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  • 1.  Adding SV3 with SV1/SV2 Cluster

    Posted 12/18/25 08:17 AM

    Hi,

    We have an existing cluster of SV1/SV2 running version 8.3.1.5, we acquired two new SV3 running version 8.7 and want to integrate them to the cluster.

    Reading the documentation, the only path is to upgrade existing to 8.5.0 and then add the SV3 (not sure if we need to downgrade to 8.5), since 8.5 is end of support, we worry about having an issue on this procedure.

    Any help or guidance regarding this.

    Thank you



    ------------------------------
    Largou walid
    Solution Architect / CTO
    Power Maroc
    Casablanca
    00212621319871
    ------------------------------


  • 2.  RE: Adding SV3 with SV1/SV2 Cluster

    Posted 12/18/25 08:43 AM

    If the host does not support online data migration via Storage vMotion or LVM mirroring, I prefer to use non-disruptive volume migration with SVC in this scenario. 



    ------------------------------
    Nezih Boyacioglu
    IBM Community Hero
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  • 3.  RE: Adding SV3 with SV1/SV2 Cluster

    Posted 12/18/25 08:44 AM

    We went through a similar upgrade over the last couple of years:

    • We had 4 x SV1's and 2 x SV2's in our cluster
    • Then did an SVC code upgrade from 8.2.x to 8.5.0.x a couple of years ago
    • Then this year we replaced two of the SV1's with SV3's, meaning we had a cluster of SV1 & SV2 & SV3
    • We then removed the SV1's from the cluster to decom them as we had more than enough processing power from SV2/3's to cover the workload
    • And now we are processing an upgrade of 8.5.0.x code to 8.7.0.x. 

    So it's a known process of upgrade, get to 8.5.0.x to then be able to add in your SV3's. Add your SV3's by swapping out the SV1's one by one. Then with SV2/SV3 you can upgrade beyond 8.5.0.x.

    Cheers, Andy



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    Andrew Hodgson
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  • 4.  RE: Adding SV3 with SV1/SV2 Cluster

    Posted 12/19/25 03:04 AM

    Hi Largou,

    upfront integrating the SV3 nodes into the existing cluster based on SV1 an SV2 nodes, you have to upgrade the cluster to 8.5.0

    If your new SV3 nodes are equiped with 32Gbit FC adapters it is possible to integrate the SV3 nodes into the cluster and run SV1/SV2/SV3 nodes in that cluster.

    (The cluster have to stay on version 8.5.0.x until the removal of the SV1 nodes)

    If youre new SV3 nodes are equiped with 64Gbit FC adapters it is not possible to integrate the SV3 nodes into the cluster without removing the SV1 nodes.

    This is because of code version 8.5.0 is the terminal release for SV1 nodes, and using 64Gbit adapters in SV3 nodes requires code version 8.6.x



    ------------------------------
    Uwe Schreiber
    System Engineer / Solution Architect
    SVA System Vertrieb Alexander GmbH
    Wiesbaden
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  • 5.  RE: Adding SV3 with SV1/SV2 Cluster

    Posted 12/19/25 03:56 AM

    Largou,

    If you do have 64Gb FC adapters then there is still a way to do a node replacement from SV1 to SV3.

    See the comment from Evelyn Perez in the thread below:

    https://community.ibm.com/community/user/discussion/ibm-svc-node-replacement#bm7901c799-1648-4be6-a49e-8bb997db11f2



    ------------------------------
    TMasteen
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    Original Message


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