Colt Inzai 2 Data Centre ↗
Published Date unavailable · Retrieved 2026-10-09
Operator identifies the second facility on the Inzai campus, fully let, with 15 MW IT power and 5,000 square metres of white space; carrier-neutral and base isolated.
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Japan / Facility
Colt Tokyo Inzai 2 Data Centre
Unknown MWTotal facility power not establishedSee capacity evidence for reported claims.
Colt Inzai 2 Data Centre · Colt Tokyo Inzai Two · Colt印西データセンター2
Operational
Operational Colt DCS hyperscale colocation facility in Chiba New Town, Inzai, in the Tokyo market. The operator identifies it as the second facility on its Inzai campus, currently fully let, with 15 MW of IT capacity. The street address is shared with other campus facilities and does not establish the individual building position.
Last researched 2026-10-09Last verified Not independently verifiedPublished revision 1
No approved site photo yet. Photos and their source dates are published after evidence review.
Site profile
- Operator
- Colt Data Centre Services
- Ownership
- Unknown / not established
- Business model / scale
- Colocation / Hyperscale
- Region / metro
- Chiba Prefecture / Tokyo
- City / locality
- Inzai
- Address
- 2 Chome-3-12 Otsuka, Inzai, Chiba 270-1352, Japan
- Location
- Campus street address established; individual Inzai 2 building point not corroborated.
Precision: unknown - Parent
- Not assigned
Capacity evidence
Statements retain their dates, definitions and development scope. Do not add these rows together.
| Claim / measurement | Scope and status | As of | Evidence and accounting |
|---|---|---|---|
| 15 MW IT load | Inzai 2 facility total advertised IT capacity Operational · cumulative | 2026-10-09 | Reported claim ↗ Excluded from capacity totals. As-of is retrieval of an undated current operator page. Advertised capacity is not independently measured occupied load and must not be added to overlapping campus totals. |
| 15 MW IT load | Second Inzai facility at full completion Planned · cumulative | 2016-10-24 | Reported claim ↗ Excluded from capacity totals. As-of is article publication date; historical planned critical IT capacity for the same facility as c1, not additional capacity. |
Development timeline
- 2016-10-24 · announcement
Construction commencement reported
DCD reported construction had started that week, with opening scheduled for Q4 2017.
Supporting source ↗ - 2017-10-25 · actual_opening_reported
Construction completion and first phase opening
Operator-hosted release announces completion and first-floor availability for customers; PDF retains a DRAFT heading.
Supporting source ↗
Disclosed specifications
White space
5,000 m²Operator body text and specification agree. Website headline also labels this figure gross site area; land area is unresolved.
Source ↗Building
Seven-storey reinforced concrete, base isolated, non-raised floorsCurrent specification; historical opening release describes the facility across six floors, potentially reflecting usable floors rather than total storeys.
Source ↗Cooling
Air cooling with N+1 per hall; hot aisle containment; CRAC on mechanical UPS backupOperator specification. Opening release describes direct expansion cooling.
Source ↗Electrical supply and resilience
66 kV active/active closed-loop receiving system; N+1 gas turbine emergency generation; 48 hours fuel at full loadVoltage is not a MW grid capacity claim.
Source ↗PUE
Average annual PUE less than 1.5Operator-reported specification; measurement period and current achieved result not supplied.
Source ↗Connectivity
Carrier-neutral; private connectivity to Microsoft Azure and AWS availableCloud connectivity does not establish either company as an onsite tenant.
Source ↗Security and support
24/7 onsite staff; CCTV, ID cards and biometrics; nitrogen fire suppression; English/Japanese supportOperator specification.
Source ↗Design standard
Colt Tier 3 specificationOperator design claim; not evidence of Uptime Institute Tier certification.
Source ↗Waste certification
TRUE Zero Waste certification reported for Tokyo Inzai 1–3Operator claim covering named campus facilities; certificate details not independently checked.
Source ↗Public business contact
+81 3 4560 4490; dcsinfo@colt.netOperator data-sheet contact; no contact was initiated.
Source ↗Sources and references
Source attribution does not imply independent verification or permission to reuse images.
Colt印西データセンター2 ↗
Published Date unavailable · Retrieved 2026-10-09
Japanese operator page confirms local name, Chiba New Town locality, 15 MW IT capacity and fully let status.
Colt Data Centre Services Expands Operations in Japan with Completion of Inzai 2 Data Centre ↗
Published 2017-10-25 · Retrieved 2026-10-09
Operator-hosted release, marked DRAFT, announces construction completion and first-floor operations on 25 October 2017; describes ten 500-square-metre halls, colocation and DX cooling.
Colt Tokyo Inzai Two - Specs ↗
Published Date unavailable · Retrieved 2026-10-09
Industry directory identifies Colt Tokyo Inzai Two at 2 Chome-3-12 Otsuka, 270-1352 Inzai City, Japan; reports 15 MW and seven floors.
Colt Technology Services Group Limited — BSI Certificate IS 78946 ↗
Published Date unavailable · Retrieved 2026-10-09
Certificate revised 11 January 2023 groups Inzai One, Two and Three at Inzai Building, 2-3 Otsuka, Inzai-shi, Chiba, Japan. Its stated expiry is 26 April 2025; used for location evidence, not current certification.
Colt Tokyo Inzai 2 Data Centre — Location Data Sheet ↗
Published Date unavailable · Retrieved 2026-10-09
Operator specification lists 15 MW IT, seven-storey reinforced concrete construction, 66 kV receiving system, air cooling, hot aisle containment, backup generation and cloud connectivity.
Colt starts to build new Tokyo data center ↗
Published 2016-10-24 · Retrieved 2026-10-09
Reports construction commencement for the second Inzai facility, planned Q4 2017 opening, 15 MW critical IT load and 5,000 square metres server space.
Inzai Two hyperscale data center ↗
Published 2019-01-15 · Retrieved 2026-10-09
Operator article explicitly identifies Inzai Two as the second facility at its campus on the edge of Tokyo, Japan.
Decarbonising our Business — Colt DCS ↗
Published Date unavailable · Retrieved 2026-10-09
Operator reports TRUE Zero Waste certification at Tokyo Inzai 1–3; global renewable electricity and PUE figures are portfolio metrics.
Profile field evidence
Name: Colt Inzai 2 Data Centre; Colt Tokyo Inzai 2 Data Centre — Location Data Sheet
Aliases: Colt Inzai 2 Data Centre; Colt印西データセンター2; Colt Tokyo Inzai Two - Specs
Kind: Colt Inzai 2 Data Centre; Inzai Two hyperscale data center
Country: Colt Technology Services Group Limited — BSI Certificate IS 78946; Colt Tokyo Inzai 2 Data Centre — Location Data Sheet; Inzai Two hyperscale data center
Region: Colt Technology Services Group Limited — BSI Certificate IS 78946
City: Colt Tokyo Inzai Two - Specs; Colt Technology Services Group Limited — BSI Certificate IS 78946
Metro: Colt Inzai 2 Data Centre; Inzai Two hyperscale data center
Address: Colt Tokyo Inzai Two - Specs; Colt Technology Services Group Limited — BSI Certificate IS 78946
Operator: Colt Inzai 2 Data Centre; Colt Data Centre Services Expands Operations in Japan with Completion of Inzai 2 Data Centre
Business Model: Colt Data Centre Services Expands Operations in Japan with Completion of Inzai 2 Data Centre
Scale: Colt Inzai 2 Data Centre; Inzai Two hyperscale data center
Statuses: Colt Inzai 2 Data Centre; Colt Data Centre Services Expands Operations in Japan with Completion of Inzai 2 Data Centre
Summary: Colt Inzai 2 Data Centre; Colt Data Centre Services Expands Operations in Japan with Completion of Inzai 2 Data Centre; Colt Tokyo Inzai Two - Specs; Colt Technology Services Group Limited — BSI Certificate IS 78946; Inzai Two hyperscale data center
Location: Colt Tokyo Inzai Two - Specs; Colt Technology Services Group Limited — BSI Certificate IS 78946
Stable identifier: 17b12353-affb-483b-a686-263aab3a6612