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Migrate Hyper-V cluster to 2016 with same ISCSI shared cluster storage

    Question

  • Currently we're running a Hyper-V 2012 R2 cluster with a ISCSI connected shared cluster storage. I installed a fresh Hyper-V 2016 cluster and want to reuse the same ISCSI cluster (due to lack of extra storage). I want to know if this is possible without corrupting the data on de storage.

    Possible scenario:

    Shutdown all VM's on 2012 R2 cluster. Shutdown all 2012 R2 Hyper-V hosts. Connect disks to new 2016 Hyper-V hosts en bring the disks online. Add them to a cluster shared storage. Import VM's from CSV to new 2016 Hyper-V hosts.

    Am I missing something crucial here?


    • Edited by NJtol Thursday, October 11, 2018 6:31 AM
    Thursday, October 11, 2018 6:31 AM

Answers

  • Then you can use Copy Cluster Roles Wizard. 

    Check this blog post for necessary steps (same steps still apply to Windows Server 2016)

    https://blog.workinghardinit.work/tag/copy-cluster-roles/

    Keep in mind that there will be some downtime, because you need to shutdown the VM's on primary cluster and start them on the new one.


    Microsoft Certified Professional

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    • Marked as answer by NJtol Thursday, October 11, 2018 2:03 PM
    Thursday, October 11, 2018 10:23 AM

All replies

  • Hello,

    You can use Cluster OS Rolling Upgrade option. 

    https://docs.microsoft.com/en-us/windows-server/failover-clustering/cluster-operating-system-rolling-upgrade

    Basically what you need to do is add your 2016 hosts to your 2012 R2 cluster, remove 2012 r2 hosts and upgrade cluster functional level. 

    Hope this helps. 


    Microsoft Certified Professional

    [If a post helps to resolve your issue, please click the "Mark as Answer" of that post or click Answered"Vote as helpful" button of that post. By marking a post as Answered or Helpful, you help others find the answer faster. ]


    Thursday, October 11, 2018 7:49 AM
  • Thank you for your input.

    I already looked into this, but our network design on the new hosts differs (using SET and other brand switches).

    Thursday, October 11, 2018 9:54 AM
  • Then you can use Copy Cluster Roles Wizard. 

    Check this blog post for necessary steps (same steps still apply to Windows Server 2016)

    https://blog.workinghardinit.work/tag/copy-cluster-roles/

    Keep in mind that there will be some downtime, because you need to shutdown the VM's on primary cluster and start them on the new one.


    Microsoft Certified Professional

    [If a post helps to resolve your issue, please click the "Mark as Answer" of that post or click Answered "Vote as helpful" button of that post. By marking a post as Answered or Helpful, you help others find the answer faster. ]

    • Marked as answer by NJtol Thursday, October 11, 2018 2:03 PM
    Thursday, October 11, 2018 10:23 AM