Colt Tokyo Data Centre 2 (TDC2)

Colt Tokyo Data Centre 2 is one of the most advanced and secure data centres in the world. It has the highest level of seismic isolation of any data centre in Japan and is in an ideal geographic location – being within easy access of central Tokyo and close to the major landing stations serving Tokyo, while also being 20km from the coast.

Key Features


  • Located 33 kilometers from central Tokyo, meeting FISC requirements as a back up for primary facilities based in central Tokyo


  • One of the few data centres in Japan that currently supports high density racks ranging from 6kW as standard up to 20kW if required


  • UPS with block redundancy or 2N configuration
  • TEPCO 66kV loop configuration (Active / Active)
  • Annual average power usage effectiveness (PUE) ratio of below 1.5


  • Sits on a different tectonic plate than Tokyo
  • Equipped with the most advanced seismic isolation equipment currently available
  • Probable Maximum Loss (PML) rating of 2.6%, one of the lowest of any building in Japan
  • Conforms to ISO27001 and FISC (Centre for Financial Industry Information Systems) standards, satisfying most major compliance requirements


  • Bilingual Service Desk (English and Japanese) and customizable Smart Hands services to act as your eyes, hands, and feet, 24x7x365



  • Six-story reinforced concrete
  • Full seismic isolation to withstand up to an intensity 7 earthquake on the Japanese scale (JMA)
  • Low PML rating of 2.6%


  • 4,000m² of IT space for cabinets (1,000m² x 4 floors)


  • High-performance connectivity using Colt’s resilient, low-latency backbone
  • Multi-carrier connectivity also available
  • Diverse routing into the facility and to each data hall

Management and Monitoring

  • Bilingual operations staff on site 24×7
  • Active monitoring and maintenance of all equipment

Power to site

  • TEPCO 66kV loop configuration (Active / Active)
  • 2 x 15MVA power supply to site

Power capacity

  • 2F, 3F and 7F: Average power capacity: 750w / m², Max power: 1,500w / m²
  • 4F and 5F: Average power capacity: 850w / m², Max power: 1,700w / m²


  • Block redundant or 2N configuration

Standby Generators

  • N + 1 configuration, gas turbine
  • Over 72 hours of fuel on site at full load

Power Density

  • Minimum default density of 1.8kW critical load per m² or 6kW per rack as standard
  • 6kW per rack as a standard and up to 20kW per rack with supplemental cooling

Power Usage Effectiveness (PUE)

  • Average annual PUE ratio of less than 1.5


  • Water-cooled centrifugal chillers with water side economizers
  • N + 1 standard, upgradeable to 2N

Emergency Cooling

  • Chilled water storage tanks
  • Well and sub-floor tanks for make-up water
  • Computer room air handler (CRAH) and chilled water pumps on mechanical UPS backup

Cooling Controls

  • Exact temperature and humidity controlled within a pre-set range

Cold Aisle Containment

  • Available on request, readily integrated during hall and rack fit-out

*1 Colocation and wholesale services from TDC1 and TDC2
*2 TDC1 and TDC2 follow FISC Security guidelines on Computer Systems for Banking and Related Financial Institutions (Facility guidelines)
*3 ITIL®v3 is a registered trade mark of the Cabinet Office