From the AWS Service Health Dashboard:

9:32 AM PDT Connectivity has been restored to the affected subset of EC2 instances and EBS volumes in the single Availability Zone in the US-EAST-1 region. New instance launches are completing normally. Some of the affected EBS volumes are still re-mirroring causing increased IO latency for those volumes.

As happened earlier this month the failure was apparently triggered by power systems failures. The US-EAST-1 data center in Virginia is Amazon’s oldest.

As in the past, the outage hurt customers relying on a single center.

Related articles

• Generator Fan Failure Triggered AWS Outage(datacenterknowledge.com)

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• Power Outage Affects Amazon Customers(datacenterknowledge.com)

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• Amazon Cloud Outage Lesson: Pilot Error?(wired.com)

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