Data centers in Japan

175 data centers are listed in Japan. The cities with the most listings are Tokyo (48), Osaka (32), Inzai (16), Kitakyūshū (8) and Tama (7); together they hold 63% of them. The operators with the most listings are Nippon Telegraph and Telephone (27), Equinix (20) and Colt DCS (10), out of 50 named operators.

By type, the listings in Japan are 56% colocation, 37% unclassified and 3% cloud region. Across all listed countries the colocation share is 39%. By published IT load, the largest single buildings are CyrusOne Osaka, OSK1 (CyrusOne, 48 MW) and Colt DCS Osaka Keihanna (Colt DCS, 45 MW).

Worldwide, Japan ranks 11th of 152 countries by number of listings, with 2% of all listed facilities. In Eastern Asia it ranks 2nd of 7; the others with the most listings are China (392), Hong Kong (54) and South Korea (34).

The three operators with the most listings hold 33% of them; 27 of the 50 named operators have a single listed facility here. Published power figures for single buildings add up to 241 MW of IT load across 7 buildings and 119 MW of utility power across 5 buildings; buildings that publish no figure are not counted. 2 facilities hold an Uptime Institute Tier certification (2 Tier III). Tier III: Ada Infrastructure Data Center, TKW1-1 and Digital Realty KIX10. Listings not yet in operation: 6 planned. Among them: CyrusOne Osaka, OSK1, STT GDC STT Tokyo 2, Colt DCS Tokyo Inzai 5 and NEXTDC TK1 Tokyo Data Centre.