Amazon Elastic Compute Cloud
User Guide for Linux Instances

Modifying the Size, Performance, or Type of an EBS Volume

You can increase the volume size, change the volume type, or adjust the performance of your EBS volumes. If your instance supports Elastic Volumes, you can do so without detaching the volume or restarting the instance. This allows you to continue using your application while changes take effect.

There is no charge to modify the configuration of a volume. You are charged for the new volume configuration after volume modification starts. For more information, see the Amazon EBS Pricing page.