We have reconfigured the MSI power so that the switches are fed both directly from the mains and also from the UPS. This removes the UPS as a single point of failure which is what caused yesterdays drop in service. The UPS commission procedure worked as advertised this morning therefore we intend to leave the situation as is until we complete our mains failure tests next Tuesday.

We have also modified the power configuration in the WTB Link block to match that of the MSI without incident. The other WTB and CIR floors already are configured in this fully redundant fashion.