Summary of the disturbance on 14.10.2022

At noon on Friday, 14.10.2022, massive disruptions to the power supply of the Göttingen
University North Campus (area of the University Medical Center Göttingen to the MPI campus
Am Faßberg) occurred due to construction work in the Göttingen city area. A total of three
ground faults led to large-scale defects or impairments at all GWDG sites. The external
Internet connection of the Göttingen site was also affected. Extensive service disruptions
or their inaccessibility until the early evening were the result.

In this situation, the Göttingen data center was able to successfully demonstrate its
resilience to power supply disruptions. At the Faßberg site, however, an affected control
element triggered an automatic emergency shutdown and an electrical supply component in
the FMZ caught fire. The fire was extinguished immediately, but led to the failure of the
battery-supported uninterruptible power supply.

After restoring the power supplies at all sites, it was possible to start restoring
services in the early afternoon. By 6 p.m., all services continued to be available again.
The HPC services were put back into operation on Saturday morning.

We regret the inconvenience caused and would like to thank our colleagues from the
Building Management of the Georg-August-Universität Göttingen and the MPI for
Multidisciplinary Natural Sciences for their good cooperation and support.