Test failures are all well and good, but don't always match reality. In this case, the design of the power infrastructure was solid, and their plans include ru

Test failures are all well and good, but don't always match reality. In this case, the design of the power infrastructure was solid, and their plans include running monthly generator testing and quarterly "disconnect from the grid" testing. But apparently something about this failure of both of the incoming power lines caused failures in multiple UPSes. Still waiting on the after-action review.