Converged Infrastructures (CI) vs. Hyperconverged Infrastructures (HCI)

• Converged infrastructure relies on hardware and employs building blocks. Hyperconverged infrastructure relies on software-defined. 
• The main difference between CI and HCI involves the rack system. A large, rack-scale platform that merges compute, storage, and networking into a turnkey product is CI, while HCI normally consists of a 1U or 2U (rack-unit) systems that consolidate one or more multi-core servers with a local storage array. 
• The architecture varies between the two approaches. “Converged architecture storage is attached directly to the physical server” and "the HCI architecture has a storage controller function that runs as a service on every node in the cluster."
• HCI shares storage to all compute and virtual machines (VMs), whereas CI does not. 
• HCI is often deployed on commodity components; providing a simplified scale out architecture with commodity servers. 
• HCI is more flexible, manoeuvrable, and scalable than CI. 
• HCI does not replace CI. They contain unique benefits.