Kakao Fully Operationalizes Ansan Data Center Capable of Hosting 120,000 Servers

Kakao has fully operationalized the Kakao Data Center Ansan starting in 2024 to enhance service stability. This data center, approximately 2.6 times the area of a soccer field, is a massive infrastructure capable of hosting up to 120,000 servers and 6EB of data. Kakao built this large-scale proprietary infrastructure to address the aging of its existing leased data centers and prepare for the expansion of AI services.

Infrastructure Redundancy for Uninterrupted Operations

The Ansan Data Center is designed for 24/7 uninterrupted operations by fully duplicating core infrastructure including power, telecommunications, and cooling. Power supply features 22.9kV voltage and 40,000kW capacity, utilizing a dual commercial power line reception method that can immediately supply alternative power in the event of a main power outage. Telecommunications equipment is also dualized across all paths to servers via multiple telecom companies and MMR rooms, while cooling facilities include buffer tanks to maintain server room temperatures even if chillers stop operating.

Disaster and Fire Response Systems

In terms of disaster response, the facility employs special-grade seismic design capable of withstanding earthquakes of magnitude 6.5 or higher on the Richter scale, ensuring safety standards comparable to domestic nuclear power plants. To prevent flooding, the ground level was designed 1.8m higher than the surrounding area with 530mm flood barriers installed, and typhoon resistance was factored in for wind speeds of 28m/s. Additionally, it is located approximately 18km away from the Sihwa Lake Tidal Power Station to minimize tsunami risks.

Fire response is handled through a four-stage early suppression system. In the event of a battery room fire, the system responds by detecting heat, spraying extinguishing agents, spraying cooling water, and then releasing extinguishing gas. Firewalls separate the UPS room and battery room to block fire spread. Furthermore, Kakao collaborates with local fire authorities to establish on-site control and suppression manuals tailored to data center characteristics and conducts regular training exercises.