Developed by Dell Technologies and VMware, VxRail appliances are the only fully integrated, preconfigured, and tested hyperconverged infrastructure (HCI) appliances with a choice of Dell PowerEdge servers powered by VMware vSphere and vSAN technologies for software-defined storage (SDS). The Dell Validated Design for Retail Edge with Deep North on VxRail is based on a three-node vSAN cluster configuration. Three Dell vSAN Ready Nodes are configured to form a single ESXi cluster to create a pool of compute and storage capacity. The three-node VxRail configuration uses VSAN with Failure To Tolerate (FTT) set to 1, where data stored on one ESXi host is copied on a second node to ensure availability if there is a node failure. The VxRail three-node configuration provides redundancy for VM resources and the applications running on them. With multinode clustering and multiple configuration options, VxRail offers self-healing capabilities for Dell Validated Design (DVD) retail applications. For more information, see the Dell EMC VxRail Product Page.
As with the medium configuration using dual ESXi nodes, Deep North HA is achieved with the same active/active deployment on VxRail. See Dell PowerEdge and VMware for a detailed description of how an active/active configuration provides HA. The following figure shows the configuration of a VxRail active/active configuration.