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Planning Guide—Dell EMC VxRail 7.0 vSAN Stretched Cluster
Executive summary Overview Networking and latency
Layer 2 and Layer 3 support
Witness traffic separation
Supported geographical distances
Data site to data site network latency
Data site to data site bandwidth
Data site to witness network latency
Data site to witness network bandwidth
Intersite MTU consistency
Connectivity
Appendix A: VxRail stretched cluster setup checklist Appendix B: VxRail stretched cluster open port requirements

Data site to witness network bandwidth

Data site to witness network bandwidth

  • Bandwidth between sites hosting VM objects and the witness nodes are dependent on the number of objects residing on vSAN. Size the data site to witness bandwidth appropriately for both availability and growth. A standard guideline is 2 Mbps for every 1000 objects on vSAN.