Information Services (IS) will perform routine maintenance of the Mainframe systems that support our Invision, Signature and Pharmakon. Information Services will disable access to mainframe systems for 1 hr. beginning at 7:00 pm on Sunday, May 20, 2012. Invision, Signature, and Pharmakon transactions will not be available during this time. Please be aware that all systems interfacing with the Mainframe, which include EPIC, PEOPLESOFT, LIS etc will not have up to date transaction information during this downtime. We apologize for any inconvenience.