On Saturday, March 21, 2015, starting at 10:00am CDT, the Globus service will undergo a significant upgrade. We will be making changes to the underlying services used for managing user identities and groups. While we are deploying these changes into our production environment, the Globus service will not be available. We expect that the upgrade will be completed within 4 hours, and the service should be fully operational by approximately 2pm CDT.