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Planning Guide—Dell EMC VxRail 4.x vSAN Stretched Cluster
Executive summary Overview Networking and latency
Layer 2 and Layer 3 support
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
Inter-site MTU consistency
Connectivity
Witness traffic separation
Appendix A Appendix B

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. It is important to size data site to witness bandwidth appropriately for both availability and growth. A standard rule of thumb is 2 Mbps for every 1000 objects on vSAN.