Rail Data Centres Power Digital Transformation in OT Cloud

Operational technology (OT) and data centre integration are rapidly emerging as the foundational elements of resilient and intelligent rail operations. As Benoît Leridon, Head of Transportation Business for Network Infrastructure at Nokia, comments, “OT cloud and data centres can enhance rail safety, efficiency and predictive maintenance for the future.”

OT cloud as rail’s nerve centre

The rail sector is undergoing a profound transformation, with OT now acting as the backbone of next-generation operational efficiency and reliability.

Digitalisation, including the widespread adoption of GSM-R, digital signalling, computer-based interlocking and automatic train operation, is streamlining infrastructure and setting the stage for major innovations such as the Future Railway Mobile Communication System (FRMCS).

Digital assets increasingly define modern rail infrastructure: real-time application software and operational data are now pivotal to network management.

By leveraging data via cloud-native platforms, operators can make smarter decisions, enhance reliability and shift towards proactive, optimised maintenance regimes.

Expanding data centre horizons

The migration of OT applications to dedicated clouds demands an extension of mission-critical rail communications into the data centre domain.

The evolution imposes new performance, resilience and latency standards for data centre fabrics, essential components that provide the foundation for digital track monitoring, signalling, ticketing, asset surveillance and more.

Reliability and uptime have become non-negotiable.

Benoît observes: “Even the best-designed systems must be able to withstand faults, spikes in demand and application movement without compromising operations.”

Trends: Consolidation and virtualisation

A significant shift is underway: operators are consolidating their data centres into interconnected, purpose-built environments. By placing facilities closer to energy sources, they benefit from reduced power and cooling costs and exploit the scalable, flexible multi-service network that supports mainline operations.

Virtualisation is a key driver in the transformation. Shifting workloads across shared infrastructure improves resource utilisation, lowers hardware overhead and accelerates the deployment of new services.

Monolithic legacy applications – once slow to upgrade – are being replaced by modular, cloud-native systems, supporting rapid, micro-services updates and far more agile maintenance practices.

Crucial decisions now centre on operational models: some operators opt for highly virtualised, dynamic environments, others for static setups and many settle for solutions tailored to regulatory and technical requirements.

A substantial focus is on risk mitigation. Utilising digital twins to simulate infrastructure changes, testing upgrades pre-deployment and controlling rollouts ensures safe, predictable evolution of the network while accommodating change.

Adding intelligence: AI and predictive maintenance

AI-powered predictive maintenance is poised to deliver game-changing benefits. By deploying sensor networks throughout rail assets, operators can detect anomalies and schedule interventions before failures occur, minimising downtime and extending asset lives.

“AI can vastly improve efficiency, safety and reliability through predictive maintenance, optimised traffic management and better decision-making,” states a Cyient report on rail AI adoption.

Continuous data collection and analysis allow for dynamic resource allocation and flexible redeployment of applications as needs evolve.

Seamless WAN and data centre integration

The integration of OT clouds with the wide-area backbone network (IP/MPLS) is essential to support low-latency, uninterrupted operations.

Fewer but larger data centres, unified through dynamic, scalable infrastructure, are driving efficiency across IT and OT operations. Border Gateway Protocol (BGP) gateways often serve as the bridge, delivering a unified platform with robust flexibility, security and reach.

The Nokia approach to building the rail’s future

OT cloud and data centre integration is rapidly shifting from a ‘nice to have’ to a critical requirement. Where once digital and IT capabilities were peripheral to tender documents, today they are core specifications.

Nokia stands out through its mission-critical WAN solutions and secure, scalable data centre fabrics designed for rail OT.

“Our Data Centre Fabric solution seamlessly connects operational technology to the cloud to help digitalise and automate railway operations,” adds Benoît, encapsulating Nokia’s end-to-end commitment.

By ensuring seamless system interworking, Nokia supports smarter operations, predictive maintenance and long-term network resilience.

As rail operators continue to digitise, OT clouds and advanced data centre integration will remain not only key pillars for operational success, but vital safeguards guaranteeing safety, adaptability and reliability into the future.