Nearly 3% of Cloud Customer Data Permanently Lost After Drone Strikes, Yandex Says

Yandex says it restored access to about 97% of cloud customer data affected by Ukrainian drone strikes on its data centres last month, while the remaining 3% was permanently lost. The outage disrupted services across Russia and affected both businesses and public agencies that rely on Yandex’s infrastructure.

The company blamed the losses on severe equipment damage and some customers not keeping external backups; customers who enabled automated backups lost no data. Yandex has made automatic backups the default for new virtual cloud servers and plans to spread computing workloads across more data centres. The strikes took place between 8 and 11 October, and Yandex said specialised supercomputers at two targeted sites survived and were moved to secure locations.