Creating an Amazon Machine Image (AMI) for your EC2 instance can give you a well-rounded sleep should you ever think about losing your data on an EC2 instance. Let’s begin by understanding what an AMI is and what it brings to the table. An AMI, as the name suggests, is an image of your EC2 instance. For more information, see Amazon Machine Images (AMI) on AWS documentation.
Here’s the fun part! You can launch multiple instances across multiple regions and accounts using AMIs, as long as the backup AMI exists in the account and region where you want to launch the EC2 instance. Choose the AMI from the backup listing that is stored in the account and region where you want to launch the EC2 instance.
In addition to using AMIs, you can back up the data on your Amazon EBS volumes to Amazon S3 by taking point-in-time snapshots. Snapshots are incremental backups, which means that only the blocks on the device that have changed after your most recent snapshot are saved. This minimizes the time required to create the snapshot and saves on storage costs by not duplicating data. Snapshots also allow you to restore a large amount of data rapidly. For more information, see Amazon EBS Snapshots.
Phoenix provides an easy-to-use, reliable platform for snapshot and AMI management of EC2 instances. You can easily restore an EC2 instance using AMIs and snapshots. In addition, by using snapshots, you can restore EBS volumes and specific files. At the time of restore, you can select the availability zone, the EC2 instance type (for example, T2), details related to the volumes and files, and apply tags to the restored EC2 instance. You can also choose to add and specify the subnet, security group, and SSH key if required.
Voila! It's that simple!
This article gave you a brief overview of how you can restore your EC2 instances by using AMIs and restore EC2 instances, volumes, and files by using snapshots. For steps on how to do this, see: