New Amazon CloudWatch metric monitors EBS volume I/O health

Today, Amazon announced the availability of a new CloudWatch metric called EBS Stalled I/O Check to monitor the health of your AWS EBS volumes. You can use this CloudWatch metric to monitor the status of the I/O being driven on your EBS volume to determine when your volumes are impaired. With this new volume level metric, you can now quickly detect and respond to EBS impairments that may potentially be impacting the performance of your applications. The metric will return a 0 (pass) or a 1 (fail) status based on if the EBS volume is processing requested I/O operations. With Amazon CloudWatch, you can use the new metric to create customized dashboards and set alarms that notify you or automatically perform actions based on the metric. The EBS Stalled IO Check metric is available by default at a 1-minute frequency at no additional charges, and is supported for all EBS volumes attached to an EC2 instance in all commercial AWS regions, including the AWS GovCloud (US) Regions. To learn more about the EBS Stalled I/O Check CloudWatch metric, please visit the [EBS CloudWatch Metrics documentation](https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/using%5Fcloudwatch%5Febs.html#ebs-volume-metrics).