Published specificationsListed on official website

Tokyo Fuchu Data Center

Fuchu City, Tokyo

SoftBank (2 facilities)

From standard racks to products for high-load GPUs. Power and cooling methods can be verified for each product.

Contact Official websiteChecked 2026-09-19

Capacity4,000 racks

Rack powerHigh-load product: up to 30 kVA / rack

Cooling methodAir-cooled, rear-door water-cooled, DLC

Published specifications

Cabinet capacity: 4,000rackFacility capacity scale, approximate number
receiving power: 50MWMaximum power receiving capacity
standard rack height: 46UStandard colocation
standard rack power: 7 / 15kVA/rackBy service category
backup runtime: 48hourGenerator operation using stockpiled fuel
Cooling: Wall-mounted blow air conditioning, hot aisle containment. DLC available as a separate productBy product
dlc power: 150kVA/rackDLC service maximum value · The announcement for F4 is 150 kW. The unit difference is retained unresolved and not automatically converted.
dlc lead time: 2monthShortest lead time · Not a guarantee of individual delivery times
remote operations: Deployment, server construction, recovery support, routine operationsOn-site operational services

Services and product specificationsConditions apply to each product or area and may not represent the entire facility.

High-load colocation

rack power standard: 15kVA/rackHigh-load product, announced 2025-01-15
rack power max: 30kVA/rackHigh-load product maximum value
rack height: 50UHigh-load product
rack load: 1,050kgHigh-load product
Cooling: Rear-door water-cooled air conditionerHigh-load product
rack count at release: 100rackProvision scale as of 2025-01-15, approximate number
planned rack count: 230rackFinal plan

Differences between published sources

Unit difference between 150 kVA on the official DLC page and 150 kW in the announcement
Standard 46U and DLC page 47U are managed by product

Notes

2026-09-19 addendum: DC business succession on 2026-04-01 confirmed in F5.

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