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A Ukrainian drone attack started a fire at a Yandex data center in Sasovo, Ryazan region, and the facility has halted operations. Yandex warned that some services may be unavailable, while the condition of two supercomputers at the site has not been reported. Ukraine has not officially commented, and it remains unclear whether the plant or the data center was the target.
A Ukrainian drone attack started a fire at a Yandex data center in Sasovo, in Russia’s Ryazan region, halting the facility’s operations and raising questions about the condition of two of the company’s supercomputers housed there. No injuries were reported. Yandex warned that some services may be unavailable, and users reported outages affecting several of its products and other websites.
The fire began at a site on the grounds of the Sasta machine-tool plant. Ryazan region authorities said the roof of “one of the enterprises” caught fire after the attack, but did not identify the facility. The data center occupies part of Sasta’s former premises and has been there since 2014. The facility has now completely halted operations, according to the report.
The Sasovo center houses Lyapunov and Chervonenkis, two of Yandex’s three supercomputers. The systems are used to train neural networks. The independent science outlet T-invariant describes Chervonenkis as Yandex’s most powerful supercomputer. Yandex has not reported the machines’ condition following the strike. The third system, Galushkin, is located in Vladimir.
Yandex warned that some services may be unavailable. Outages were reported for Yandex Cloud, Yandex Disk and Yandex Documents, as well as the websites of Cian, Russian Railways and several regional administrations. The companies and organizations affected were not all described as having confirmed the cause of their outages. Yandex shares fell more than 3% amid the strike, according to Moscow Exchange data.
Service Disruptions and Computing Capacity
The incident has affected a facility that supports services used by consumers and businesses, including Yandex’s cloud platform and products that depend on it. Reported outages at external websites suggest that disruption may extend beyond Yandex, though the report does not establish that the Sasovo center caused every listed outage.
The site also holds two of Yandex’s three supercomputers, which the company uses to train neural networks. Any damage or prolonged loss of access could affect that work, but the scale of any impact is not yet known. The report says Chervonenkis ranked 19th in the global Top 500 list in 2021, before falling into the second hundred as sanctions complicated infrastructure updates. The strike’s effect on the systems and Yandex’s computing capacity remains unreported.
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The Sasovo Site and Its Role
Yandex’s data center has operated in part of Sasta’s former premises since 2014. In September, employees at the center publicly showed equipment and said they worked in Sasovo, according to the report. Sasta makes pipe-threading machines for export and for machine-building plants across Russia. The outlet Astra says the plant also provides a production base for defense enterprises; it is on sanctions lists maintained by several Western countries.
The strike follows attacks on data centers in Ukraine. The report says that since September 23, Russian forces have damaged or destroyed data centers belonging to at least eight companies, with some sites struck more than once. Russia’s Defense Ministry said those facilities “provide for the processing and transmission of intelligence data in the interests of the Ukrainian Armed Forces.” That is the ministry’s stated rationale; the report does not independently establish the role of each facility.
“one of the enterprises”
— Ryazan region authorities, as quoted in the report
Target and Equipment Damage Unknown
It is unclear whether the plant or the data center was the intended target. Ukraine has not officially commented on the strike. Ryazan region authorities confirmed a fire at an enterprise but did not name it, while the report identifies the affected site as a Yandex data center on Sasta’s grounds.
Yandex has not disclosed whether Lyapunov or Chervonenkis was damaged, whether either system can be moved or restored, or how long the center will remain offline. The reported service outages are still developing, and the available information does not establish which external websites depend on the Sasovo facility or whether their disruptions share the same cause.
Yandex’s Damage and Service Updates
The next key information is likely to come from Yandex’s assessment of the data center and its supercomputers, along with updates on when operations and affected services can resume. The report does not give a repair timeline. Further statements from regional authorities or Ukraine could clarify the site struck and the circumstances of the attack.
Until the condition of the facility is reported, the duration of outages and any longer-term effect on Yandex’s computing capacity remain unknown. Users and organizations relying on affected services will need to follow provider updates for information on availability and restoration.
Key Questions
Where did the strike take place?
The attack started a fire at a Yandex data center in Sasovo, in Russia’s Ryazan region, on the grounds of the Sasta machine-tool plant.
Which Yandex supercomputers are at the site?
The Sasovo center houses Lyapunov and Chervonenkis, two of Yandex’s three supercomputers. The condition of both systems after the attack has not been reported.
Which services have reported problems?
Reported outages affected Yandex Cloud, Yandex Disk and Yandex Documents, as well as the websites of Cian, Russian Railways and several regional administrations. The report does not establish that the data center caused every listed outage.
Was the data center the intended target?
That is not known. The report says it remains unclear whether the plant or the data center was targeted, and Ukraine has not officially commented.
Source: rss
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