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Even when an EC2 instance is stopped, its associated EBS volume size can still increase due to several factors.
The most common reasons include automated snapshots created by AWS Backup or other backup solutions, the volume being attached to other running instances, or unexpected EBS volume activity.
To investigate, check volume attachments in the AWS Console, review backup solutions and their schedules, monitor CloudWatch metrics for write operations, and examine AWS Config for any automation rules affecting the volume. Best practices include tagging resources, enabling CloudTrail for API call monitoring, setting up CloudWatch alarms for unexpected volume activity, and conducting regular audits of backup policies and automation rules.
If necessary, consider detaching the volume temporarily, but always create a snapshot before making any changes. Remember to implement proper backup policies and set up monitoring alerts for long-term management of your EBS volumes.
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- AWS OFFICIALUpdated 4 months ago
Where are you seeing the EBS volume size increasing? Is that in the console?
In Billing Dashboard , View your bill.
Thanks.
Probably the volume is being used over the network.Look at the security group rules to check what ports allow traffic. To confirm, you could also block all security rules and observe.