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Planning Guide—Dell EMC VxRail 7.0 vSAN Stretched Cluster
Overview
vSAN stretched cluster feature Distributed Resource Scheduler Fault domains VxRail cluster nodes Witness host VxRail cluster requirements vCenter Server requirements Customer-supplied vCenter Server requirements

VxRail cluster nodes

  • vSAN stretched clusters are deployed across two sites in an active/active configuration. An identical number of ESXi hosts are recommended. Unbalanced configuration is supported it with the use of Site Affinity Rule.

    VxRail cluster deployment options

    You must plan the VxRail stretched cluster deployment before installation. Depending on the number of nodes in the VxRail cluster, you can:

    • Deploy up to 16 nodes on initial deployment or
    • Initially deploy the minimum number of nodes per site and then scale out additional nodes either at installation or during the VxRail stretched cluster life cycle.

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Witness host