Anomalous heat in the Netherlands led to a large-scale outage for hosting providers working with a Russian-speaking audience. In the Qupra data center in Amsterdam, industrial air conditioners began to fail one after another, after which servers automatically shut down to prevent overheating.

According to Nikita Tsaplin, head of RUVDS, the problems could have affected 75% to 90% of such companies at the facility. Some clients remained without access to servers and websites for 45 to 70 hours.

The heat only exposed a weak point. Many European data centers were built for summer temperatures up to +30–32 °C, and preparing for +40 was considered too expensive. However, the first cooling problems at Qupra appeared back in winter — the system was already operating almost at its limit then.

The situation was exacerbated by powerful servers, of which there were too many in the small facility. Such equipment generates 5–10 times more heat than conventional equipment, so when the air conditioners failed, the temperature began to rise especially quickly.