On October 7, 2024, at around 17:30 UTC, our administrators received alerts regarding the performance of Block Storage volumes hosted in Frankfurt. Impacted customers were seeing intermittently high read/write times on the affected volumes. Our investigation revealed that a network connection issue between Block Storage hosts in Frankfurt was causing the service to become unavailable. To mitigate the issue, one of the affected Block Storage hosts was rebooted. As of 20:30 UTC the service was fully recovered.
We have determined that the network connection issue was due to faulty hardware installed in one of the affected hosts, and have begun the process to replace it.