The UPS maintenance originally announced for April 25th has been rescheduled to Wednesday, April 30th

In other maintenance news, we took advantage of some cold early morning temperatures to do some coil cleaning and belt changes on our original HVAC unit, known as 'AC1'. Yesterday we cleaned the interior condenser coils, and this morning we cleaned the exterior evaporator coils and changed some belts. Keeping these coils clean is a vital part of maintaining our HVAC systems. Clean coils are efficient coils. The condenser coils can be cleaned without interruption of the system's operations. The evaporator coils required shutting down the AC1 for about 5 minutes at a time. Since we have three main AC units and one reserve unit, there was negligible operational impact on the datacenter. Belts are in constant duty cycle, much like in your car, and require changing at regular intervals.

Below: A view of AC1's interior condenser coils in the middle of their "Spring Cleaning." Usually these are not visible, as they are hidden behind doors.