Digital Realty NRT14 (Inzai Campus)

Status: Live / Operational   |   Location: Inzai City, Chiba Prefecture (Greater Tokyo), Japan

Project Overview

The NRT14 data center, located in the heart of the "Inzai Data Center Park" in Chiba Prefecture, Greater Tokyo, represents a significant leap in Japan’s digital infrastructure. Launched in December 2025 by MC Digital Realty—a 50/50 joint venture between Digital Realty and Mitsubishi Corporation—this facility is the third and most advanced installment on the NRT campus. It brings an additional 31 MW of IT load to the site, pushing the total campus capacity to 104 MW.

Strategic Importance & The "AI Factory" Concept
NRT14 is not a traditional colocation site; it is engineered as an "AI Factory." In 2025, as Generative AI transitioned from experimental training to mass-market inference, the demand for specialized hardware like NVIDIA’s Blackwell (B200) GPUs surged. NRT14 was designed in direct collaboration with NVIDIA, utilizing the DSX Blueprint to handle the intense computational and thermal requirements of these modern clusters. This makes it a critical hub for Japanese enterprises and global hyperscalers looking to deploy private AI environments at scale within the Tokyo metropolitan area.

High-Density Engineering & Technical Innovation
The hallmark of NRT14 is its ability to support extreme power densities. While standard data centers often struggle with loads above 20 kW per rack, NRT14 is built for 70 kW per rack as a standard, with the capability to scale even higher. To manage this heat, the facility employs an innovative Air-Assisted Liquid Cooling (AALC) system. This hybrid approach combines traditional chilled water systems with liquid-to-chip cooling, allowing the facility to maintain a Power Usage Effectiveness (PUE) of 1.25 even under heavy AI processing loads.

Connectivity & The PlatformDIGITAL® Ecosystem
As a core node in the PlatformDIGITAL® ecosystem, NRT14 provides customers with more than just floor space. It offers seamless interconnection via ServiceFabric®, enabling businesses to orchestrate complex hybrid-cloud workflows across 300+ global locations from a single interface. Within the campus, the Campus Connect high-speed fiber ring links NRT14 to NRT10 and NRT12, allowing clients to distribute their workloads across multiple buildings for enhanced disaster recovery and low-latency data exchange.

Sustainability and Local Context
In alignment with Japan’s green mandates, NRT14 operates on 100% renewable energy. By utilizing Google-level sustainability standards and Mitsubishi’s local operational expertise, the project minimizes its carbon footprint while supporting the energy-intensive AI sector. The choice of Inzai City is also strategic; the area is known for its stable, solid ground with significantly lower seismic risk compared to central Tokyo, providing a safer environment for the billions of dollars in hardware housed within its walls.

In summary, NRT14 is a future-proof facility that bridges the gap between traditional IT and the new era of Artificial Intelligence, solidifying Tokyo’s position as the primary data hub of Northeast Asia.

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