In an HCI, the server is responsible for managing both the compute and storage resources. Hence, a careful balance in the recommended specifications of the server components is vital. The server processor must be capable of handling the HCI-associated storage overhead and the compute requirement for workloads to be run on the servers. Having predesigned, complementary, and prevalidated components enables you to realize the full benefits of HCI with the lowest possible data center footprint.
The storage components in this Ready Solution include the servers, direct-attached storage (DAS) drives, storage controller, and the RDMA network. The R640 S2D Ready Nodes support a wide range of DAS drives for the S2D storage pool. Supported drives include SSD, HDD, and NVMe drives that are validated for hyper-converged workloads. This solution uses the all-flash configuration.
The following figure illustrates the storage architecture on a four-node S2D Ready Node HCI.
Figure 1. Server and storage architecture