3.38 How AWS Hibernation Mode Works

AWS Hibernation Mode is a powerful feature that enables users to pause their EC2 instances and resume them later without losing any data or state. This feature is particularly useful for applications that require a long time to start up and need to maintain their state even when they are not running.

When an EC2 instance is put into hibernation mode, the instance's memory is saved to the EBS volume, and the instance is stopped. The saved memory includes the contents of the instance's RAM, as well as the state of any open files, network connections, and running processes.

When the user wants to resume the instance, AWS restores the saved memory from the EBS volume, and the instance starts up exactly where it left off. This process typically takes a few minutes, depending on the size of the instance's memory.

Hibernation mode is available for a variety of EC2 instance types, including those running on Linux and Windows. It is easy to use and can be initiated through the AWS Management Console, the AWS CLI, or the AWS SDKs.

Overall, AWS Hibernation Mode is a powerful tool that can help users save time and money by enabling them to pause their EC2 instances when they are not in use and resume them quickly when needed.