Date: 07/31/23
Data center interconnect
Data Center Interconnect: How DCI Keeps Distributed Infrastructure Connected
Short Answer
Data Center Interconnect links multiple data centers so applications, users, and workloads stay synchronized across locations.
DCI supports resource sharing, data replication, disaster recovery, edge computing, hybrid cloud, and long-distance connectivity. The right design depends on bandwidth, distance, latency, security, optics, power, cost, and operational complexity.
With rigid computing requirements in today's world, Data Center Interconnect is a necessity for businesses looking to synchronize their data centers. Data Center Interconnect, or DCI, is the technology that links multiple data centers together, bridging the gap between locations separated by different distances.
From short range to mid-range to long range, DCI helps data centers stay synchronized whether they are located several miles apart, across a continent, or in different global regions.
This technology is increasingly important as business operations become more distributed and organizations deploy hybrid cloud, multi-cloud, edge computing, and geographically diverse data center environments.
For broader planning across optics, cables, AI infrastructure, validation, procurement, and OEM-compatible networking, visit the Data Center Networking Resource Center. For high-speed interconnect planning across DAC, ACC, AEC, AOC, and optical transceivers, review the 400G, 800G, and 1.6T Interconnect Selection Guide.
Key Applications for Data Center Interconnect
Interconnecting data centers across different locations supports a modern networking framework. DCI helps organizations share resources, protect sensitive data, support edge computing, scale infrastructure, and maintain backup resources.
Sharing Resources
DCI enables businesses to aggregate resources across data centers, balance workloads, and improve network efficiency across distributed infrastructure.
Protecting Sensitive Data
DCI supports secure data transport between locations, helping organizations move critical assets across access layers while maintaining security controls.
Edge Computing
Edge environments move compute and storage closer to users and devices. DCI helps keep edge data centers synchronized with central infrastructure.
Scalability
As data requirements grow, DCI helps organizations expand network capacity, add geographic redundancy, and support increasing application demands.
Backup and Resiliency
DCI supports data replication, backup access, disaster recovery, and continuity planning across multiple data center locations.
Network Challenges in Data Center Interconnect
One of the key challenges in DCI is building optical transport that supports the capacity and bandwidth demands of modern networks. As more data moves across distributed applications, DCI links must support higher throughput, longer distance, and greater reliability.
Users need access to compute, storage, and content resources across locations. That level of connectivity can strain optical transport when the network relies on outdated optics or interconnect strategies.
Another challenge is operational cost. DCI networks often require high-performance optical links, stronger monitoring, and more complex management. The right optical strategy should improve capacity and distance while reducing avoidable complexity.
Bandwidth Growth
DCI links must carry larger volumes of data between locations without creating application bottlenecks.
Distance and Latency
Longer links require stronger optical planning, link budget review, and transport design.
Operational Complexity
DCI adds monitoring, troubleshooting, power, cooling, redundancy, and maintenance requirements across multiple sites.
Why Coherent Optics Fit Data Center Interconnect
Coherent optics are a strong fit for DCI because they help networks carry greater amounts of data across longer distances. Instead of relying only on amplitude modulation, coherent optics use advanced modulation and digital signal processing to improve transport efficiency.
Coherent optics modulate multiple aspects of the light wave, including amplitude, phase, and polarization. This allows more data to move through a single optical wavelength over longer distances.
Signal distortion and noise are common barriers in long-distance transmission links. Coherent optics use digital signal processing, or DSP, to help compensate for those impairments and support stable transport between data centers.
For optical-specific production readiness, review How to Validate Third-Party Optical Transceivers Before Production Deployment and the 800G Transceiver Validation Guide.
Planning note: Coherent optics are especially useful when DCI links need higher capacity, longer reach, stronger signal processing, and scalable optical transport between locations.
DCI Interconnect Planning Framework
Before selecting optics or interconnects for DCI, teams should review the distance, bandwidth requirement, application sensitivity, optical power budget, fiber path, platform support, and long-term growth plan.
| Planning Area | What to Review | Why It Matters |
|---|---|---|
| Distance | Metro, regional, long-haul, or campus distance | Distance affects optic type, fiber path, amplification, latency, and link budget. |
| Bandwidth | Current throughput and future capacity needs | DCI links should support growth without requiring avoidable redesign. |
| Latency | Application sensitivity and replication requirements | Workloads like analytics, financial systems, and distributed applications may require tighter latency planning. |
| Optical Power | Transmit power, receive sensitivity, link margin, and amplification | Optical power planning helps prevent unstable links, errors, and deployment delays. |
| Operations | Monitoring, spares, support ownership, and troubleshooting path | DCI links become critical infrastructure and need clear operational support. |
Axiom Solutions for Data Center Interconnect
Axiom supports data center teams with optical transceivers, coherent optics, networking cables, validation support, and OEM-compatible infrastructure solutions for DCI applications.
Axiom helps teams evaluate platform compatibility, reach, power, optical behavior, coding, diagnostics, and deployment requirements before DCI links move into production.
Coherent Optics
Support high-capacity DCI links across longer metro, regional, and data center paths.
OEM-Compatible Optics
Help reduce sourcing risk while maintaining platform compatibility and deployment confidence.
Validation Support
Review coding, optical performance, diagnostics, platform behavior, and production-readiness requirements.
Data Center Interconnect FAQs
Data Center Interconnect, or DCI, links multiple data centers so data, applications, and workloads stay synchronized across locations.
Organizations use DCI to share resources, support data replication, improve resiliency, connect edge and core environments, support hybrid cloud, and maintain access to critical data across sites.
Coherent optics support higher capacity and longer-distance transmission by using advanced modulation and digital signal processing to improve optical transport performance.
Teams should review distance, bandwidth, latency, fiber path, optical power budget, link margin, platform compatibility, diagnostics, spares, and support ownership.
DCI connects edge data centers with central infrastructure, helping keep distributed workloads synchronized while supporting lower-latency processing closer to users and devices.
Talk to Axiom
Need help planning Data Center Interconnect optics?
Share your distance, platform, target speed, fiber path, link budget, and deployment timeline. Axiom can help review coherent optics, transceivers, compatibility, and validation requirements before production.
