Home > Workload Solutions > High Performance Computing > White Papers > Dell Validated Design for HPC NG-Stor Storage - Joint Solution with Kalray > NVMe Nodes
Pairs of the latest PowerEdge servers in HA (failover domains) provide a high-performance flash-based tier for the NG-Stor solution. The NVMe tier consists of three alternative PowerEdge servers: PowerEdge R660, PowerEdge R760, or PowerEdge R7625. For HA purposes, GPFS replication of NSDs was implemented across each NVMe server HA pair to functionally have mirrored NSDs.