What is DCI and how does it work? How DCI Works With 7,500 data centers around the globe, your business probably owns or connects to more than one. But they donât exist in isolation. Data centers connect to other data centers. Data Center Interconnect (DCI) is the technology that connects two or more data centers together over short, medium, or long distances using high-speed packet-optical connectivity. To learn more about DCI and how it works check out this blog post. Vendor: Download this Resource! This email address doesnât appear to be valid. Please provide a Corporate Email Address. This email address is already registered. Please login.