The Modular Data Center, which houses the Flux HPC cluster, will be without power starting from 6 a.m. to approximately 6 p.m. on Saturday, April 2, for preventative maintenance of electrical infrastructure on North Campus. Additional networking maintenance for campus storage systems is going to start at 11pm Saturday night at the Administrative Services Building machine room which will also impact the HPC clusters.
Therefore, we expect Flux, Armis, /scratch and transfer hosts to be out of service from 6 a.m. until at least midnight.
During the outage, annual preventative maintenance on the MDC will also take place. ARC-TS will also take advantage of the outage to install firmware updates to our new InfiniBand switch.
We will update the outage schedule as needed on Twitter at @ARCTS_UM.