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Dell VxRail Network Planning Guide
Introduction Planning Your Data Center Network for VxRail VxRail Cluster Types VxRail Feature-Driven Decision Points VxRail Hardware and Switch Selection Decision Points Prepare Data Center for VxRail Implementation Planning the VxRail Cluster Implementation Planning vSAN Witness Networking
Introduction to vSAN witness networking
Overview of vSAN witness for VxRail stretched cluster
Overview of vSAN witness for VxRail 2-node cluster
Networking rules for vSAN witness and VxRail
Reserve network settings for vSAN witness networks
Planning VxRail Satellite Nodes Networking Configure the Network for VxRail Preparing to Build the VxRail Cluster VxRail Network Considerations After Implementation Appendixes

Overview of vSAN witness for VxRail stretched cluster

Overview of vSAN witness for VxRail stretched cluster

  • For a stretched cluster with sites across geographic distance, plan for the following network requirements:

    • The vSAN witness needs to be positioned in a separate failure domain to ensure resiliency.
    • The VxRail External Management Network must be stretched across the primary and secondary sites on a Layer 2 network to ensure seamless connectivity for the management components in the event of a failure.
    • The networks supporting the vSAN witness must be able to route between both VxRail cluster sites and the witness site.
       

    DiagramDescription automatically generated

    Figure 64.    Stretched cluster with vSAN witness at third site