Azure UK South Outage: Overheating Cloud Dried Up Services for Customers


UK South — one of Microsoft Azure’s two local cloud regions — crashed offline on Monday after an outage triggered by a cooling system failure in a data centre.

The incident, between 14:54 BST on 14 Sep 2020 and 01:41 BST on 15 Sep 2020, left engineers scrambling to place the automated cooling system into manual mode and reset affected pumps, after rising internal temperatures saw systems shut down all network, compute, and storage resources “to protect data durability”.

“Customers using multiple Availability Zones, or Zone Redundant services may have experienced minimal impact” notes Microsoft in

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