Starting at 2:05 AM PDT we experienced power and network connectivity issues for some database instances within the affected Availability Zone. The affected Multi-AZ databases failed over to another Availability Zone as expected, and only Single-AZ databases remained affected. By 5:30 AM PDT, power and networking connectivity had been restored to the majority of affected Single-AZ database instances. Since the beginning of the impact, we have been working to recover the remaining database instances. A small number of remaining database instances are hosted on hardware which was adversely affected by the loss of power. For these database instances, we have provided additional recovery guidance via the Personal Health Dashboard. The issue has been resolved and the service is operating normally.