Data Center Interconnect

Definition of Data Center Interconnect

Data Center Interconnect (DCI) refers to the networking infrastructure and techniques used to link and manage multiple data centers within the same organization or between different companies. The purpose of DCI is to enable seamless communication, resource sharing, redundancy, and load balancing among these data centers. It facilitates enhanced data availability, data recovery, and seamless user experiences across geographically dispersed sites.


The phonetics of the keyword “Data Center Interconnect” can be represented in the International Phonetic Alphabet (IPA) as:/ˈdeɪ.tə ˈsɛn.tər ˌɪn.tərˈkə.nɛkt/

Key Takeaways

  1. Data Center Interconnect (DCI) enables the linking and sharing of resources, such as computing power, storage, and network access, between geographically distributed data centers.
  2. DCI improves efficiency, data redundancy, and application performance by allowing organizations to exchange and manage traffic across their data centers in a more centralized manner.
  3. Essential technologies for DCI include high-speed optical transport, advanced routing protocols, and software-defined networking (SDN) to provide optimal performance, reliability, and security in interconnecting data centers.

Importance of Data Center Interconnect

Data Center Interconnect (DCI) is an essential technology concept in today’s ever-evolving digital landscape.

Primarily, it refers to an approach that links distributed data centers to efficiently share resources, ensure data redundancy, and enhance network capabilities.

The importance of DCI lies in its ability to improve overall data center performance, support the seamless exchange of information between connected facilities, and bolster business continuity measures.

The implementation of DCI has a positive impact on various industries, as it allows organizations to manage increased workloads, reduce latency, and achieve optimal scalability.

Consequently, this underpins the drive toward advanced cloud services and critical applications, which in turn shape our digital experiences, capabilities, and interconnected world.


Data Center Interconnect (DCI) is a crucial component in the world of networking, serving as the backbone for seamless connectivity between geographically distributed data centers. The primary purpose of DCI is to facilitate the efficient sharing of resources, ensure accessibility, and maintain consistency between multiple data centers.

This is highly beneficial for organizations that require a high level of performance and reliability in their data management processes, as well as the capability to safeguard against disasters or equipment failures. For instance, in case of an outage in one data center, the connected facilities can take over the workload, ensuring uninterrupted service.

Moreover, DCI plays a vital role in enhancing the overall network optimization by providing faster access to data and applications, enabling workload balancing, and fostering data replication for improved redundancy. With the growing demand for agile, scalable, and cost-effective networking solutions, the use of Data Center Interconnects has proliferated in various industries, such as telecommunication, finance, and IT services.

In brief, a well-architected DCI strategy empowers organizations to achieve optimal performance while enhancing end-user experiences and ensuring business continuity across locations.

Examples of Data Center Interconnect

Data Center Interconnect (DCI) technology involves connecting data centers to improve resource sharing, redundancy, and load balancing. This technology allows for better performance, reduced costs, and greater flexibility. Here are three real-world examples of Data Center Interconnect technology:

Google’s B4 Private Network: Google’s B4 is a private wide-area network that interconnects its numerous data centers. The B4 network allows Google to allocate its resources effectively and efficiently across the globe by shifting traffic between data centers depending on user demands. This private network ensures efficient communication between Google’s various services, such as Gmail, YouTube, and Google Cloud Platform, and provides fast and reliable access to users.

Oracle’s Exadata Cloud Service and Direct Connection: Oracle’s Exadata Cloud Service implements DCI technology to interconnect data centers, allowing enterprises to utilize their Exadata database within Oracle Cloud Infrastructure. By utilizing this service, customers can benefit from lower latency and higher performance when connecting their on-premises data centers to the cloud. Oracle Direct Connection feature also provides faster and more reliable access to cloud services and resources.

Microsoft Azure ExpressRoute: Microsoft’s Azure ExpressRoute is a service that connects on-premises data centers to Azure Cloud resources through a private, dedicated link. This service enables low-latency and high-security connections between data centers, providing businesses with seamless access to cloud-based computing, storage, and networking resources while avoiding the potential risks of using the public internet. This reliable interconnection of data centers ensures efficient data transfer between on-premises and cloud-based resources.

Data Center Interconnect FAQ

What is Data Center Interconnect?

Data Center Interconnect (DCI) is a technology used to connect multiple data centers over short or long distances. It enables high-speed and secure communication between the data centers to share resources, workloads, or provide redundant data storage.

Why is Data Center Interconnect important?

Data Center Interconnect is essential to support business continuity, increase resource utilization, improve performance, and enhance security. DCI allows organizations to collaborate between data centers for load balancing, disaster recovery, and other critical operations.

How does Data Center Interconnect work?

DCI uses high-speed and low-latency network connections to establish a link between data centers. It employs advanced networking technologies, such as Ethernet VPN (EVPN) and Multiprotocol Label Switching (MPLS), to create a flexible and scalable network for transferring data securely and efficiently.

What are some key features of Data Center Interconnect?

Key features of DCI include high-speed data transfer, low-latency communication, built-in encryption for data security, support for various network topologies, and seamless integration with existing data center infrastructure.

What are some challenges associated with Data Center Interconnect implementation?

Some challenges of implementing DCI include selecting the right network architecture for the organization’s needs, dealing with the demands of high-bandwidth applications, ensuring data security and compliance, and managing latency to maintain optimal performance.

Related Technology Terms

  • Optical Transport Network (OTN)
  • Layer 2 and Layer 3 VPNs
  • Software-Defined Networking (SDN)
  • Dark Fiber and Wavelength Services
  • Carrier Ethernet

Sources for More Information


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