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The XC Family cluster for SAP HANA consists of either two-socket XC740xd nodes or four-socket XC940 nodes. A minimum of four nodes is recommended, and the mixing of two-socket and four-socket nodes is allowed within a cluster. This approach provides flexibility because you can start small and scale in accordance with your requirements.
The cluster architecture that is shown in the following figure consists of a mix of two-socket and four-socket nodes:
In this configuration, one XC940 node and two XC740xd nodes were part of active nodes, with one SAP HANA production system per socket. The XC940 node was hosted with three production SAP HANA VMs, and the XC740xd node was hosted with one production SAP HANA VM. The fourth node (XC940) was a stand-by node. This node must have equivalent compute resources available to accommodate the SAP HANA VMs during node failure scenarios.
Note: Dell Technologies representatives are available to assist with sizing and designing the cluster configuration to meet your requirements.