EMERGENCY POWER SHUTDOWN - ALL RCAC SYSTEMS CURRENTLY UNAVAILABLE
Link to update at October 22, 2026 11:48am EDT UPDATE:
Negishi has returned to service and is available for use. With this, all RCAC clusters and services affected by the October 21 power outage are back online.
Jobs that were running on Negishi when the outage began were stopped and will need to be resubmitted. If something doesn’t look right, please contact rcac-help@purdue.edu.
Link to update at October 22, 2026 11:12am EDT UPDATE:
Update: Power has been restored, and all RCAC clusters, except Negisihi, have returned to service.
Jobs that were running when the outage began were stopped and will need to be resubmitted. This includes interactive sessions such as OnDemand desktops and Jupyter. Please check your recent output and files for anything that may have been interrupted.
If something doesn’t look right or you have questions, contact us at rcac-help@purdue.edu.
What happened: On the afternoon of October 21, a section of electrical equipment (a busway) supplying our data center was found to be overheating. To prevent damage and ensure safety, we shut down the systems it powered, and Purdue Utilities de-energized its feed. Electricians then repaired the equipment and safely restored power, and our team has brought all systems back up.
Link to update at October 21, 2026 5:36pm EDT UPDATE:
Due to an issue with the new power distribution system in our data center, our contractor had to shut down power to a number of RCAC systems this afternoon. The outage has now expanded to include all RCAC systems.
To restore power as quickly as possible, the contractor will shut down everything in the MATH G109/G190 data center and then bring it back up on the newly installed power bus. This means all clusters and all storage, including Depot, will be powered off.
What this means for you:
All RCAC clusters are unavailable. Jobs that were running have been or will be stopped and will need to be resubmitted once service is restored. This includes interactive sessions such as OnDemand desktops and Jupyter.
All storage systems, including Depot, will be powered off during the transition, so files, Globus endpoints, and other services will not be accessible until systems are restored.
We do not have an estimated time of return to service. Bringing everything back up on the new power bus will take time.
Our website is also unavailable because of this outage, so we will send further updates by email.
Questions or concerns, please contact rcac-help@purdue.edu.
-RCAC
Link to original posting ORIGINAL:
Due to an issue with the new power distribution system, our contractor has had to shut down power to a number of RCAC systems that are connected to the new busway. We are bringing the affected systems down now as a precaution.