Mizuho Securities to build liquid-cooled data center with HPE

Mizuho Securities and Hewlett Packard Enterprise (HPE) have announced the construction of a new liquid-cooled data center. This project marks the first adoption of Direct Liquid Cooling (DLC) technology within the Japanese financial industry through the implementation of the HPE Cray XD2000.

The initiative is driven by the increasing computational demands of Mizuho Securities' Global Markets division. The division currently processes over 360 million calculations per day for tasks such as derivative valuations and market and credit risk simulations. To manage this growing workload, the new system aims to provide 1.6 times the performance per server node compared to current systems.

According to HPE internal testing estimates, the DLC method can achieve up to a 20% performance increase per kilowatt and a 15% reduction in power consumption compared to air-cooling methods. The project will begin equipment construction and operational evaluation this autumn, with full production scheduled to commence after April 2027. The first phase involves the introduction of eight server nodes, with future plans to expand capacity and potentially deploy GPU servers for private AI infrastructure.