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Japan / Facility

東京府中データセンター · IDC Frontier Tokyo Fuchu

Operational

Operational hyperscale colocation facility in Fuchu, Tokyo. Opened on 2020-12-01; IDC Frontier's data-center business transferred to SoftBank on 2026-04-01. Published opening capacities are 50 MW receiving power and 35 MW IT capacity; these overlap and must not be added.

Last researched 2026-10-09Last verified Not independently verifiedPublished revision 1
Operator-labeled exterior photograph of Tokyo Fuchu Data Center; capture date undisclosed.

Site / building photo

Operator-labeled exterior photograph of Tokyo Fuchu Data Center; capture date undisclosed.

Published date unknown · Captured date unknown · Checked 2026-10-09

Research-selected property image; reviewer must confirm site identity, suitability and rights before publication.

www.idcf.jp · Source and attribution ↗
Image rights and date notes

Published on the operator facility page. Photographer and reusable license not disclosed; permission must be resolved before import. Publication and capture dates were not independently established.

Site profile

Operator
SoftBank Corp.
Ownership
Unknown / not established
Business model / scale
Colocation / Hyperscale
Region / metro
Tokyo / Tokyo
City / locality
Fuchu
Address
1-9 Nikkocho, Fuchu, Tokyo 183-0044, Japan (SoftBank Fuchu Building)
Location
Street address supported by industry directory and indexed government disclosure; no independently corroborated property point or accessible Google Maps listing.
Precision: unknown
Parent
Not assigned

Capacity evidence

Statements retain their dates, definitions and development scope. Do not add these rows together.

Claim / measurementScope and statusAs ofEvidence and accounting
50 MW
Grid connection
Maximum receiving capacity of Tokyo Fuchu facility at opening
Operational · cumulative
2020-12-01Reported claim ↗

Excluded from capacity totals. As_of is the dated opening announcement. Maximum receiving rating, not measured draw or IT load; overlaps c2.

35 MW
IT load
Published facility IT capacity at opening
Operational · cumulative
2020-12-01Reported claim ↗

Excluded from capacity totals. As_of is the opening announcement, which explicitly labels this IT capacity; actual occupied or fully commissioned load is not established.

50 MW
Grid connection
Current advertised maximum receiving capacity of Tokyo Fuchu facility
Operational · cumulative
2026-10-09Reported claim ↗

Excluded from capacity totals. As_of is retrieval date of an undated current page. Restates the maximum receiving rating; overlaps c1 and is not additional capacity.

Development timeline

  1. 2020-12-01 · actual

    Operations began

    SoftBank and IDC Frontier announced commencement of facility operations.

    Supporting source ↗
  2. 2025-07-07 · announcement

    DLC housing sales launched

    Announced sales of direct-liquid-cooling housing for GPU servers at Tokyo Fuchu.

    Supporting source ↗
  3. 2025-12-25 · announcement

    Business succession announced

    Company split announced with planned 2026-04-01 effectiveness.

    Supporting source ↗
  4. 2026-04-01 · actual

    SoftBank business succession

    Current facility page states IDC Frontier's data-center business was inherited by SoftBank.

    Supporting source ↗

Disclosed specifications

Opening building areas

Gross floor area 45,419 m²; building footprint 7,225 m²

Opening announcement figures; not land area.

Source ↗

Building configuration

Server building: B1–7F; office building: B1–3F

Server building uses base isolation; office building uses earthquake-resistant construction.

Source ↗

Rack and room capacity

Approximately 4,000 racks across 25 server rooms

Accommodation capacity, not occupied racks.

Source ↗

Rack service density

7 kVA/rack or 15 kVA/rack

English service menu; kVA is not kW. Opening announcement separately gives general/high-power ranges up to 20 kVA.

Source ↗

DLC housing

Direct liquid cooling; up to 150 kW per rack

Specialized service announced in July 2025; not a sitewide density or additional site MW claim.

Source ↗

Conventional cooling

Water-cooled wall-blowing system with air-cooled chiller and turbo refrigerator; hot-aisle capping

Operator description.

Source ↗

Power resilience

Loop reception, UPS and gas-turbine backup with stored fuel for 48 hours

Operator specifications; no independent performance test reviewed.

Source ↗

Connectivity

Carrier-free; Tokyo Otemachi PoP and Osaka Dojima PoP via Otemachi; closed inter-site networks

Cloud connectivity offerings do not establish those cloud providers as tenants.

Source ↗

Information security certification

ISO/IEC 27001:2022; IS 694681

Registry includes Tokyo Fuchu under IDC Frontier, expiry 2027-08-28; post-succession scope should be checked.

Source ↗

Security and customer facilities

Facial/vein authentication, 24-hour guards and CCTV; attached customer office space

Official facility description.

Source ↗

Sources and references

Source attribution does not imply independent verification or permission to reuse images.

Tokyo Fuchu Data Center — official facility page ↗

Published Date unavailable · Retrieved 2026-10-09

Identifies the Fuchu facility, December 2020 opening, 50 MW maximum receiving capacity, approximately 4,000 racks in 25 rooms, rack/room colocation and completed SoftBank succession effective 2026-04-01.

IDC Frontier Tokyo Fuchu Data Center ↗

Published Date unavailable · Retrieved 2026-10-09

Directory identifies Japan and address 1-9 Nikkocho, 183-0044 Fuchu. Lists SoftBank Tokyo Fuchu at the same address and other separately named neighboring facilities.

Tokyo Fuchu Data Center — English facility page ↗

Published Date unavailable · Retrieved 2026-10-09

Describes carrier-free Tokyo metropolitan connectivity, rack density, cooling, loop power reception, UPS, generators, security and attached offices; links exterior photographs.

Property photo · www.idcf.jp ↗

Published Date unavailable · Retrieved 2026-10-09

Operator-labeled exterior photograph of Tokyo Fuchu Data Center; capture date undisclosed. Original image: https://www.idcf.jp/service_shared/img/datacenter/location/fuchu/img_mv_01.jpg

Profile field evidence

Name: Tokyo Fuchu Data Center — official facility page; SoftBank and IDC Frontier open a large data center in Fuchu

Aliases: Tokyo Fuchu Data Center — official facility page; IDC Frontier Tokyo Fuchu Data Center

Kind: Tokyo Fuchu Data Center — official facility page; SoftBank and IDC Frontier open a large data center in Fuchu

Country: IDC Frontier Tokyo Fuchu Data Center

Region: Tokyo Fuchu Data Center — official facility page; SoftBank and IDC Frontier open a large data center in Fuchu

City: Tokyo Fuchu Data Center — official facility page; SoftBank and IDC Frontier open a large data center in Fuchu

Metro: Tokyo Fuchu Data Center — English facility page

Address: IDC Frontier Tokyo Fuchu Data Center; 2026 disclosure of establishments approved for renewable-energy surcharge reductions

Operator: Tokyo Fuchu Data Center — official facility page; Notice of absorption-type company split with parent SoftBank

Business Model: Tokyo Fuchu Data Center — official facility page; SoftBank and IDC Frontier open a large data center in Fuchu

Scale: SoftBank and IDC Frontier open a large data center in Fuchu

Statuses: Tokyo Fuchu Data Center — official facility page; SoftBank and IDC Frontier open a large data center in Fuchu

Summary: Tokyo Fuchu Data Center — official facility page; SoftBank and IDC Frontier open a large data center in Fuchu; Notice of absorption-type company split with parent SoftBank

Location: IDC Frontier Tokyo Fuchu Data Center; 2026 disclosure of establishments approved for renewable-energy surcharge reductions

Media: Property photo · www.idcf.jp

Stable identifier: c2f7dd50-1323-432c-a310-bb833c3a25eb