Overview
NTT DATA Keihanna OSK11 Data Center is an operational data center in Seika, Kyoto Prefecture, Japan.
The facility is operated by NTT Global Data Centers. NTT DATA states that OSK11 opened in February 2026 and provides 30 MW of IT load across 10,900 m² of server-room space in a four-story seismically isolated building. The site supports carrier-neutral connectivity and is designed for AI and other high-density workloads, including direct liquid cooling.
A street address and map coordinates are intentionally not published in this record because the reviewed primary sources identify Seika, Kyoto Prefecture but do not publish a defensible building-level street address.
Facility and operator
- Operator
- NTT Global Data Centers
- Alternate Names
- Keihanna OSK11; OSK11
- Entity Type
- Facility
- Facility Type
- Data center
- Classifications
- Carrier-neutral, AI infrastructure
Physical location
- City
- Seika
- State / Region
- Kyoto Prefecture
- Country
- Japan
- Country Code
- JP
Development timeline
- Development Status
- Operational
- Opened
- 2026-02
Capacity and scale
- Power Capacity (MW)
- 30 MW
- Building Area
- Approximately 28,894 m² gross floor area
- Technical Space
- 10,900 m² server-room space; up to 3,800 racks; Tier III-equivalent; direct liquid cooling capable