HCI stands for Hyper-Converged Infrastructure and is an IT framework that combines storage, computing and networking functionality into a single software solution or appliance. Hyperconverged solutions contain a hypervisor (virtual machine monitor) for virtualized computing, virtualized networking and software-defined storage functionality.
HCI solutions typically run on standardized hardware assets with the added value being in the software defined elements managed within the hypervisor. Capacity in a HCI is described as nodes, with multiple nodes being clustered together to create large pools of shared compute and storage resources. Since these storage, compute, and network elements are now all software-defined, virtualized across an underlying pool of hardware, resources management can be federated across all instances, and the entire environment becomes simpler to manage via a single interface.