Scale the Ready Stack by adding multiple compute nodes (pods) in the data center. As shown in the following figure, you can use the Dell EMC Networking Z9264 switch to create a simple yet scalable network. The Z9264 switches serve as the spine switches in the leaf-spine architecture. The Z9264 is a multiline rate switch that supports 10/25/40/50/100 GbE connectivity and can aggregate multiple racks with little or no oversubscription.
When connecting multiple racks by using the 40/100 GbE uplinks from the rack, you can build a large fabric that supports multi-terabit clusters. The density of the Z9264 allows flattening of the network tiers, enabling you to create an equal-cost fabric from any point to any other point in the network.
Figure 5. Multiple compute pods scaled out by using leaf-spine architecture
For large domain layer-2 requirements, use extended Virtual Link Trunking (eVLT) on the Z9264, as shown in the following figure. The VLT pair that is formed can scale in terms of hundreds of servers inside multiple racks. Each rack has four 40/100 GbE links to the core network, providing enough bandwidth for all the traffic between each rack.
Figure 6. Multiple compute pods scaled out by using eVLT