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Confusion about Azure Clearpass vCPU requirements

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  • 1.  Confusion about Azure Clearpass vCPU requirements

    Posted May 16, 2025 08:02 AM

    I am confused about the CPU requirements for running a Clearpass C1000V model. When checking the hyperv/ESX requirements for a C1000V we see the following:

    C1000V (500 Virtual Appliance OVF)    

    • 8 reserved virtual CPUs     -     Underlying CPU is recommended to have a PassMark® of 3000 or higher    
    • 8 GB RAM

    However, when deploying a 6.12 Clearpass from the Azure Marketplace from HPE, we see a recommended Standard_D2s_v3 with 2 vcpus, 8 Gib memory and that corresponds to a ClearPass C1000 appliance. We are running a few CPPM's in Azure with those hardware specs and we see performance issues on the CPU load.

    Am i wrong to expect at least 8 vcpu's in Azure?



  • 2.  RE: Confusion about Azure Clearpass vCPU requirements

    Posted May 16, 2025 08:15 AM

    Azure requirements can differ from the ESX/Hyper-V ones. Please take a look into the ClearPass documentation.

    https://arubanetworking.hpe.com/techdocs/ClearPass/6.12/Installation-Guide/Default.htm#Cloud-Azure/CD-AZ-move-to-production.htm?TocPath=Cloud%2520Deployments%253A%2520Microsoft%2520Azure%2520Cloud%2520Service%257C_____3

    Azure requirements according to the ClearPass 6.12 documentation

    Select the size, in GiB, based on your cost factors and deployment requirements.

    For v5 instance types: 

    * Enter 1000 GB for a Standard_D2ds_v5 VA that corresponds to a ClearPass C1000 appliance.
    * Enter 1000 GB for a Standard_D4ds_v5 VA that corresponds to a ClearPass C2000 or C2010 appliance.
    * Enter 1800 GB for a Standard_D16ds_v5 VA that corresponds to a ClearPass C3000 or 3010 appliance.

    For v3 instance types:

    * Enter 1000 GB for a Standard_D2s_v3 VA that corresponds to a ClearPass C1000 appliance.
    * Enter 1000 GB for a Standard_D4s_v3 VA that corresponds to a ClearPass C2000 or C2010 appliance.
    * Enter 1800 GB for a Standard_D16s_v3 VA that corresponds to a ClearPass C3000 or 3010 appliance.


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    Willem Bargeman
    Systems Engineer Aruba
    ACEX #125
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