Ukraine Drones Hit Second Yandex Data Center in Two Days

What is a data center, and what does it mean for drone damage to disable several of its modules?

A data center is a facility filled with computer servers, storage systems, networking equipment, and power and cooling systems. Companies use it to run websites, apps, cloud services, and artificial-intelligence workloads. Damage matters because services often depend on many connected systems working together.

In Kaluga, Yandex said a drone attack damaged part of its data-center infrastructure and completely disabled several modules. A module is a separate operating section within a larger facility. If modules stop working, available computing capacity, data access, or network connections can fall sharply. Yandex warned that some services might be disrupted.

The article does not identify which modules failed or which services were affected. Yandex said its teams were working day and night to keep services running and help people affected. The incident shows how physical attacks on digital infrastructure can create problems for widely used online services.

How many Yandex data centers and AI supercomputers were affected in the two reported attacks?

The two reported attacks affected two Yandex data centers. One was in the Kaluga region southwest of Moscow, and the other was in the Ryazan region southeast of the capital. The attacks happened on consecutive days, according to the article.

The Ryazan facility was especially important for artificial-intelligence development. Yandex said two of the three supercomputers it uses to develop its AI model are housed there. The article reports that the Ryazan center was hit, but it does not explicitly say whether both supercomputers were damaged or disabled.

In Kaluga, Yandex said several data-center modules were completely disabled. Therefore, the confirmed scale is two affected data-center sites, while the article identifies two AI supercomputers located at the attacked Ryazan site. Yandex said the strikes hit the core of its operations and could disrupt services.

Which Yandex services could be disrupted when a data center is damaged?

When a data center is damaged, services relying on its servers, storage, or network connections may slow down, fail, or become temporarily unavailable. The impact depends on how much capacity was lost and whether other facilities can take over the work.

In this case, Yandex said damage in Kaluga had completely disabled several modules. The company warned that some of its services might experience disruptions, but it did not identify particular apps or products. The article describes Yandex’s apps broadly as an indispensable part of many Russians’ lives.

Yandex said the attacks struck at the core of its operations. Its teams were working day and night to keep services running and help people affected. The immediate consequence was therefore a risk to unspecified Yandex services, rather than a confirmed outage of named products.

Why would Ukraine target data centers and other economic infrastructure during the war?

The article presents the attacks as part of an expanding war over infrastructure. Ukraine’s President Volodymyr Zelensky said the targeted strikes were retaliation for recent Russian missile attacks against Ukrainian server facilities in Kyiv. He said Ukraine always responds symmetrically.

The targets extend beyond data centers. The article lists energy facilities, refineries, ports, oil and grain vessels, e-commerce warehouses, and telecommunications infrastructure. These sites support industrial activity, communications, transport, trade, or digital services. Damaging them can affect an opponent’s ability to operate and can create pressure away from the battlefield.

The article does not provide a separate Ukrainian explanation for every target. It reports that both countries expanded drone attacks on economic targets during the year. The attacks on Yandex facilities therefore combine stated retaliation with a broader campaign against infrastructure connected to national economic and technological activity.

How did Russia's recent attacks on Ukrainian server facilities shape Ukraine's stated response?

Russia’s recent attacks on Ukrainian server facilities provided the stated reason for Ukraine’s response. Ukrainian President Volodymyr Zelensky described the Yandex strikes as retaliation for Russian missile attacks against server facilities in Kyiv. He told reporters, “We always respond symmetrically.”

The timing and target choice are important in the article’s account. Russia had conducted a strike campaign against Ukrainian data centers and telecommunications infrastructure over the previous month, including targets in central Kyiv. Ukraine then targeted Yandex data centers in the Kaluga and Ryazan regions on successive days.

The article frames this as an escalating exchange involving digital and economic infrastructure. It does not establish that every Russian or Ukrainian strike was directly matched to one specific target. It does show that Zelensky publicly presented the Yandex attacks as a response to Russia’s earlier strikes.

How can companies keep online services running when a data center is damaged or destroyed?

Companies keep services available by avoiding dependence on one facility. They can place servers and copies of data in multiple regions, use backup power and communications links, and design systems so another site takes over when one fails. This is called redundancy and failover.

A service might automatically redirect users to a healthy data center after damage. Data can also be replicated between locations, while recovery plans help teams restore systems. These measures reduce disruption, although they cannot guarantee uninterrupted service when several sites or network connections are attacked.

The article does not describe Yandex’s technical backup arrangements. It says the company was trying to keep services running and that its teams were working day and night. The two attacks show why geographically separate facilities and tested recovery procedures matter for companies operating critical online services.

Why do modern AI systems require specialized supercomputers and large data centers rather than ordinary computers?

Modern AI systems learn by processing large datasets and repeating huge numbers of mathematical calculations. Specialized computers can perform many of those calculations simultaneously. They also provide fast connections between processors, which helps large AI models train more efficiently than they would on ordinary computers.

A data center brings together many such machines with high-capacity storage, networking, electricity, cooling, and monitoring. This shared environment lets companies train models, store data, and run services at scale. The article identifies two of Yandex’s three AI-development supercomputers as being housed at its Ryazan data center.

The article does not explain the technical requirements of Yandex’s AI model. In general, losing a major facility can remove computing capacity or interrupt access to data and supporting systems. That is why Yandex described the attacks as striking at the core of its operations and warned of possible service disruptions.

Key Facts:

📌 Several Kaluga data-center modules were completely disabled.

📌 Yandex warned that some services might experience disruptions.

📌 Teams worked day and night to keep services running.

📌 Two Yandex data centers were attacked in two days.

📌 Two of Yandex’s three AI supercomputers are housed in Ryazan.

📌 Several Kaluga data-center modules were completely disabled.

📌 Yandex did not specify which services might be disrupted.