IRP Site Availability Issue

Summary of impact: From 18:41 GMT on 19 June 2018 until 00:55 GMT on 20 June 2018, several IRP site instances experienced failure to respond symptoms. Sites could not transact any sales.

Root cause: The cause was traced to a Microsoft datacentre in North Europe i.e. Dublin. Microsoft Azure Engineers identified an underlying temperature issue in the datacentre triggered an infrastructure alert, which in turn caused structured precautionary shutdown of a subset of Storage and Network devices to ensure hardware and data integrity

Mitigation: Microsoft Azure Engineers addressed the temperature issue, and performed a structured recovery of the affected devices and any downstream services that were affected

Resolution: Services began to be restored at 00:27 GMT on 20 June 2018, and were completely restored by 00:55 GMT on 20 June 2018