MC Digital Realty
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MC Digital Realty is a 50/50 joint venture between Mitsubishi Corporation and Digital Realty, formed in 2017 to build and operate colocation and interconnection data centers across Japan. As of 2026 the company runs nine known buildings across two campuses — the NRT campus in Inzai City, Chiba (Greater Tokyo), the KIX campus in Osaka, and two Mitaka, Tokyo facilities inherited from Mitsubishi — with total Japan-wide IT capacity that has grown from roughly 112MW in 2021 toward figures approaching 200MW as newer buildings like NRT14 came online. Its newest Tokyo-area buildings, NRT12 and NRT14, are purpose-built for AI and HPC workloads, supporting rack densities up to 70kW with air-assisted liquid cooling, and NRT12 hosts the first Digital Realty Innovation Lab in Asia Pacific, opened in 2026 to let customers test air-cooled and direct liquid-cooled configurations before full-scale AI deployment. The JV leverages Mitsubishi’s local real estate and infrastructure expertise alongside Digital Realty’s global PlatformDIGITAL® interconnection ecosystem, and was named Frost & Sullivan’s Japan Data Center Services Company of the Year in 2024.
MC Digital Realty has a confirmed data center presence at the following locations:
FACILITY OPERATOR
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MC Digital Realty Data Center Locations
- Inzai, Japan NRT10 PENDING REVIEW
Also known as Digital Narita 1, NRT10 was MC Digital Realty's first purpose-built facility in the Tokyo metropolitan area, opening in September 2021 with about 38MW of capacity. - Inzai, Japan NRT12 PENDING REVIEW
NRT12 hosts the first Digital Realty Innovation Lab in the Asia Pacific region, opened in 2026, letting customers evaluate air-cooled and direct liquid-cooled setups before full AI deployment. - Inzai, Japan NRT14 PENDING REVIEW
NRT14 became operational around April 2026 as the third building on the NRT campus, pushing the campus's total planned IT power capacity toward approximately 100MW. - Osaka, Japan KIX10 PENDING REVIEW
Also known as Digital Osaka 1, KIX10 was MC Digital Realty's first data center opened in the Kansai region in 2017, with about 8MW of capacity. - Osaka, Japan KIX11 PENDING REVIEW
KIX11 opened in 2019 with about 25MW of capacity, expanding the connected KIX campus after the initial KIX10 building. - Osaka, Japan KIX12 PENDING REVIEW
Also called Digital Saito 3, KIX12 opened in August 2021 as an 18,334 sqm, 20MW building, and was launched as part of the industry's first announced dual-site data center program with Tokyo's NRT10. - Osaka, Japan KIX13 CARRIER-NEUTRAL PENDING REVIEW
Also known as Digital Osaka 4, KIX13 is a three-story building reinforced with seismic isolation systems and opened in February 2023 with up to 21MW of IT capacity, bringing the Osaka campus total above 70MW. - Mitaka, Japan HND10 PENDING REVIEW
This Mitaka facility was Mitsubishi Corporation's original data center that was transferred into the joint venture when MC Digital Realty was formed in 2017. - Mitaka, Japan HND11 PENDING REVIEW
Together with HND10, this facility forms MC Digital Realty's original Mitaka site, combining for roughly 21MW of capacity.
By Continent
Common Questions
Where does MC Digital Realty operate data centers?
MC Digital Realty's facilities are concentrated in two metro clusters: the NRT campus in Inzai City, Chiba Prefecture (Greater Tokyo), and the KIX campus in Osaka, plus two older HND buildings in Mitaka, Tokyo that came from Mitsubishi Corporation's original portfolio when the joint venture formed in 2017.
Does MC Digital Realty have AI/GPU-optimized data centers?
Yes — its NRT12 (opened 2024) and NRT14 (opened April 2026) buildings at the NRT campus in Inzai, Chiba are specifically designed for AI and HPC workloads, supporting rack densities of up to 70kW with air-assisted liquid cooling.
Is MC Digital Realty a cloud provider?
No. MC Digital Realty sells colocation and interconnection services in Japan, hosting cloud providers and enterprises' own hardware rather than selling its own cloud compute product.
How big is the KIX campus in Osaka?
As of the February 2023 opening of the fourth building, KIX13, the connected KIX campus in Osaka spans about 23,000 square meters and offers over 70MW of combined IT capacity.
Does MC Digital Realty offer colocation services?
Yes — we've identified 9 facilities where MC Digital Realty may offer colocation services. Please contact MC Digital Realty directly to confirm current availability and terms.
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