According to IDC’s (International Data Corporation) Worldwide Quarterly Converged Systems Tracker for the second 2019 quarter. IDC tracks three kinds of systems; Certified reference systems and integrated infrastructure (such as Dell EMC VxBlock), integrated platforms (Oracle), and hyper-converged systems (Nutanix & Dell EMC VxRail).

HCI is the fastest-growing category between these.
IDC HCI Stats 2019



IDC HCI Software Stats 2019



As it relates to the branded products of the HCI systems, Dell Technologies was the largest at $533,2-million in revenue and a 29,2% share. Nutanix got $258,8-million in revenue, which is 14,2% of the total HCI market during the quarter. Cisco was the third-largest branded HCI vendor with $114-million in revenue representing a 6,2% market share.
From the software ownership view of the market, systems running VMware hyper-converged software with $694,1-million in total 2Q19 vendor revenue, or 38% of the total. Systems running Nutanix hyper-converged software got $522-million in second-quarter vendor revenue or 28,6% of the total. Both amounts represent the value of all HCI hardware, HCI software and system infrastructure software, regardless of how it was branded.
By Cobus Smit – 27 Sept 2019