In order to replace an IO module in the disk cache storage, an off-cycle outage for HPSS has been scheduled for Monday, December 18, beginning at 10 a.m. (CST). HPSS will be unavailable throughout the installation, which is expected to last for approximately 90 minutes. The HPSS Globus endpoint will be suspended during this time. Please contact support@alcf.anl.gov with any questions, comments, or concerns.