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Replacing servers in a HYPER-V cluster and asking about processors and Live Migration.

Slawomir 61 Reputation points
2024-11-07T17:22:06.51+00:00

Hi. I will be replacing two servers in our HYPER-V cluster. The new two DELL R760 servers will have Intel® Xeon® Gold 6426Y processors (16 cores per processor).

I also have two DELL R750 servers in the cluster, which have Intel® Xeon® Gold 6326 processors (12 cores per processor).

Will Live Migration between these servers work without any problems? Because I previously had such a configuration that two DELL R750 servers had an Intel® Xeon® Gold 6326 processor and two DELL R740 servers had an Intel(R) Xeon(R) Gold 6126 processor and here Live migration very often did not work between these servers.....

My suspicions go in the direction that Intel(R) Xeon(R) Gold 6126 processors have 12 cores per processor and Intel® Xeon® Gold 6326 processors have 16 cores per processor and maybe this is the point that Live Migration did not work....... The previous configuration looked like this, that two servers also had different CPUs from the other two servers, but the number of cores matched (12 cores per processor) and there was no problem with Live Migration......

Thank you for your answers and help.

Best regards.

Windows Server 2019
Windows Server 2019
A Microsoft server operating system that supports enterprise-level management updated to data storage.
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Windows Server
A family of Microsoft server operating systems that support enterprise-level management, data storage, applications, and communications.
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Hyper-V
Hyper-V
A Windows technology providing a hypervisor-based virtualization solution enabling customers to consolidate workloads onto a single server.
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Windows Server Clustering
Windows Server Clustering
Windows Server: A family of Microsoft server operating systems that support enterprise-level management, data storage, applications, and communications.Clustering: The grouping of multiple servers in a way that allows them to appear to be a single unit to client computers on a network. Clustering is a means of increasing network capacity, providing live backup in case one of the servers fails, and improving data security.
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  1. Alex Bykovskyi 2,091 Reputation points
    2024-11-07T17:30:04.4933333+00:00

    Hey,

    Live Migration should work between different Intel CPUs, especially if CPUs are from the same generation. There are cases, when Live Migration can fail to an older CPUs. Might help with troubleshooting. https://learn.microsoft.com/en-us/troubleshoot/windows-server/virtualization/troubleshoot-live-migration-issues
    More information about compatibility mode:
    https://www.altaro.com/hyper-v/performance-impact-hyper-v-cpu-compatibility-mode/

    Might help with cluster configuration:
    https://www.starwindsoftware.com/resource-library/starwind-virtual-san-for-hyper-v-2-node-hyperconverged-scenario-with-windows-server-2016/

    Cheers,

    Alex Bykovskyi

    StarWind Software

    Note: Posts are provided “AS IS” without warranty of any kind, either expressed or implied, including but not limited to the implied warranties of merchantability and/or fitness for a particular purpose.

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