Polaris and Cooley will undergo regular maintenance on Monday, September 18, 2023, starting at 14:00 UTC (09:00 CDT 09/18), and ending at 01:00 UTC on Tuesday, September 19, 2023 (20:00 CDT 09/18). During this time, no jobs will be run on the systems and there will be no access to the login nodes. Filesystem access will be disrupted.