Upgrading / Downsizing compute in local data center (2 Hyper-V Cluster & 1 Hyper-V Host -> 1 Hyper-V Cluster)

StephanG 811 Reputation points
2022-05-06T05:30:34.43+00:00

Hi everyone,

as we are moving more and more services to the cloud we want to downsize our data center.
We want to make 5 hosts to 2 hosts with less or no downtime.

We cannot use live migration as our storage is filled ~60%. The storage is being reused afterwards. So no (not yet) Azure Stack HCI with Storage Spaces Direct.
I have read about the rolling update of clusters. But this only describes one cluster being upgraded and not a merge.

Anyone can tell me a high level migration approach?

Best regards
Stephan

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  1. Limitless Technology 39,296 Reputation points
    2022-05-12T07:30:08.86+00:00

    Hello

    Thank you for your question and reaching out.
    I can understand you are having some queries related to downsize of Nodes.

    In my opinion you can Evict Hyper-V nodes one by one and Re-use them on your new Cluster.

    You can also use Storage services migration to Copy Live VMs DATA or .vhdx while they are running.


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  2. StephanG 811 Reputation points
    2022-05-18T05:46:04.757+00:00

    In my opinion you can Evict Hyper-V nodes one by one and Re-use them on your new Cluster.

    But i get 2 new Proliants that will host all the VMs in the end. I do not want to reuse anything but the SAN.

    The quick migration is not an option for at least one VHDx (Size 6TB)

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