Dear customers of InterNetX GmbH,
On Friday, 16.04.2021, starting at 7:30 a.m, the technical operator of our Munich data center carried out a routine inspection on protective devices of the medium voltage supply, which included maintenance of the transformers and circuit breakers. During a step preceding the actual maintenance, the load swing of the redundant UPS systems, which according to the technical operator had already been carried out successfully several times in the previous week, there was a power interruption of approx. 0.5 seconds at around 7:55 a.m. The period in question was so short that some systems continued to run without interruption. However, numerous systems performed a restart. As a result, several services and systems had to be restarted, in some cases manually. Since Friday morning, our employees have been undertaking everything in their power to restore the availability of all systems/services as quickly as possible and to provide affected customers with appropriate support. The name service was not affected due to redundant distribution across several sites.
The reason for the interruption of the multiple redundant power supply is currently being analyzed. For this purpose, log files were secured by the manufacturer of the UPS system on Saturday and are currently still being evaluated. As soon as we have more information about the cause, we will notify you. We thank you for your understanding.
We would like to apologize for any inconvenience caused!