In certain instances, additional switch features and functionality are necessary to support specific use cases or requirements.
- If your plans include deploying all flash storage on your VxRail cluster, 10 GbE network switches are the minimum requirement for this feature. Use a minimum 25 GbE network if that is supported in your data center infrastructure.
- Enabling advanced features on the switches planned for the VxRail cluster, such as Layer 3 routing services, can cause resource contention and consume switch buffer space. To avoid resource contention, select switches with sufficient resources and buffer capacity.
- Switches that support higher port speeds are designed with higher Network Processor Unit (NPU) buffers. An NPU shared switch buffer of at least 16 MB is recommended for 10 GbE network connectivity. An NPU buffer of at least 32 MB is recommended for more demanding 25 GbE network connectivity.
- For large VxRail clusters with demanding performance requirements and advanced switch services that are enabled, consider switches with additional resource capacity and deeper buffer capacity.