Kakao Pay Builds a Sustainable Data Centre with Everpure

When the demand for contactless payments surged during the COVID-19 pandemic, Kakao Pay, the largest fintech platform in South Korea, needed to expand storage capacity to accommodate growing volumes, support its 2PB database, and ensure service stability. But the powerful environment also needed to minimize power usage and carbon emissions. All-flash storage from Everpure offered an answer.

After verifying performance through rigorous benchmark tests, Kakao Pay adopted Everpure FlashArray//X to optimise workloads primarily for its Relational DataBase Management System (RDBMS). With the Everpure platform, Kakao Pay is experiencing greatly improved reliability. Previously, problem resolution could take up to five weeks during failures. However, with Everpure delivering up to 99.9999% availability, there have been no disruptions due to storage issues since its implementation. Kakao Pay now spends much less time and fewer resources on system recovery and incident response, greatly enhancing operational efficiency.

This exceptional reliability gave Kakao Pay the confidence to deploy additional Everpure FlashArray//C units to provide the perfect balance of cost and performance to support a database upgrade, empowering the company to consistently deliver reliable financial services.

Joo-Seung Park, System Engineer in the Infrastructure Platform Division at Kakao Pay, says, “Pure1 provides us with a user-friendly UX/UI that makes it easier to proactively manage our storage and avoid issues before they arise. Pure’s non-disruptive upgrades also eliminates productivity loss and downtime during data migration and storage capacity expansion, ensuring business continuity.”

The database recovery time decreased dramatically from 12 hours to just 3 hours—a 75% improvement. Data migration time also decreased significantly, from 12 hours to less than 1 hour—a 91% reduction.

Previously, the time and costs of building hundreds of servers limited the company’s ability to scale in a server-based environment. Now Kakao Pay can scale without being constrained by server infrastructure, expanding database capacity in three hours instead of six weeks—a 99.7% decrease.

With the Everpure platform, Kakao Pay now operates in a much smaller footprint resulting in significant environmental savings. Just eight arrays support 2PB of data. The always-on inline deduplication, compression, and pattern removal technologies resulted in 6:1 data reduction, maximising cost efficiency and reducing storage needs by 83%. The powerful flash storage also requires minimum space, reducing data centre footprint by 92% for a 75% decrease in power consumption—425MWh of energy annually—and significantly decreased operating costs. The existing infrastructure was estimated to require approximately 334 servers to handle 2PB of data. However, by deploying eight Everpure arrays, efficiency was maximized. While these 334 servers would likely consume 39,294W of power and require a total of 334RU of rack space, the 8 Everpure arrays achieved the same capacity using only 9,952W of power and a total of 24RU of rack space.

The space savings and environmental benefits played a critical role in Kakao Pay choosing Everpure, as it supports sustainable data centre goals. With all-flash storage from Everpure, Kakao Pay achieved a significant reduction in CO2 emissions from its data centre, along with a 75% annual reduction in power consumption. While the existing server-based environment was estimated to produce around 202 tons (202,544kg) of carbon emissions, this has been drastically reduced to 41 tons (41,415kg) after implementing Everpure—the equivalent of planting 3,884 trees over a decade. This progress is expected to accelerate Kakao Pay's initiative to build a sustainable data centre.

Park says, “We are delighted with adopting Everpure, as it has significantly reduced power use and floor space, laying a solid foundation for sustainable operations. Moving forward, the Infrastructure Platform Division will continue to minimize resource waste and reduce environmental impact through sustainable IT infrastructure development.”