30/8/2023
On 30 August 2023, a utility power surge in the Australia East Azure region tripped a subset of the cooling units offline in one datacenter, within one of the Availability Zones. While working to restore cooling, temperatures in the datacenter increased, so Microsoft proactively powered down a small subset of selected compute and storage scale units, to avoid damage to hardware. Multiple downstream services were impacted in the early hours of the morning, with 99% being back online by the start of the business day.
