The encryption happens on the servers that host EC2 instance, giving encryption of information in-travel from EC2 instance to EBS storage.Amazon EBS encryption uses AWS Key Management Service (AWS KMS) customer master keys (CMK) when creating encrypted volumes and any snapshots created from your encrypted volumes. The first time you create an encrypted volume in a region, a default CMK is created for you automatically. This key is used for Amazon EBS encryption unless you select a CMK that you created separately using AWS KMS. Creating your own CMK gives you more flexibility, including the ability to create, rotate, disable, define access controls, and audit the encryption keys used to protect your data.
The Amazon EBS encryption highlight is likewise …show more content…
However, you can migrate existing data between encrypted volumes and unencrypted volumes.
If you have existing data that you would like to store on an encrypted volume, you need to migrate the data from your unencrypted volume to a new encrypted volume.
Likewise, if you have data that currently resides on an encrypted volume that you would like to share with others, you need to migrate the data you want to share from your encrypted volume to a new unencrypted volume.
Amazon EBS Volume Performance on Linux Instances
Several factors can affect the performance of Amazon EBS volumes, such as instance configuration, I/O characteristics, workload demand, and storage configuration. After you learn the basics of working with EBS volumes, it's a good idea to look at the I/O performance you require and at your options for increasing EBS performance to meet those requirements.
Amazon EBS Performance Tips
• When you consider the performance requirements for your EBS storage application, it is important to start with an EC2 configuration that is optimized for EBS and that can handle the bandwidth that your application storage system