Attachment: Construction Overview of Osaka 5 Data Center
| Location | Nishi-ku, Osaka-city (7 minute walk from nearest station) | |
| Building | Total floor space | Approx. 12,500 m2 |
| Server room space | Approx. 3,700 m2 (1,600 racks equivalent) | |
| Structure and number of floors | Steel, seismic isolation structure with 11 floors above ground | |
| Seismic proofing | - Seismic isolation device to decrease at most 80% of seismic shock on the building - Able to withstand seismic forces equal to Kobe Earthquake or Great East Japan Earthquake |
|
| Maximum load weight | 1,500 kg/m2 | |
| Power equipment | Power receiving | - 77,000 V extra high tension power - Main line and standby power supply system - Sourced from two different power substations - Total power: 17MVA (+17MVA standby) |
| Emergency power generator |
- N+1 redundant configuration - Power for more than 48 hours without refueling |
|
| UPS | - Static type - N+1 redundant configuration - 2(N+1) configuration available - HVDC available |
|
| Air conditioning | Air-cooling system | - Water cooling - N+1 redundant configuration - End wall injection air conditioning system - Maximum 15 kW/rack |
| Telecommunication equipment |
- Circuit connection - Cable route |
- Direct connection to disaster-resistant cable tunnel - Direct connection to NTT Com transmission service node - Four routes for multi-carriers (NTT Com circuits from two different transformer substations possible) |
| Security | - Facility access - Security - Monitoring |
- Dedicated system to apply online for facility access - Requires IC card at security gate and biometric authentication - Surveillance cameras and individually locked racks - Custom systems for financial institutions, etc. requiring higher security |
| Green ICT | Green measures | - Extra-efficient air conditioning, outdoor-air cooling and LED lighting - Optimized air-flow management in server rooms |
| Green index | PUE: 1.3 (designed value on the assumed conditions) | |
| Tier level* | Tier III or above (change to Tier IV available) | |
* NTT Com assessment based on Uptime Institute’s Tier Classification Define Site Infrastructure Performance