Understanding Amazon Elastic Block Storage
In simple terms, Amazon Elastic Block Storage (EBS) is a hard drive for a server in AWS. One advantage of Amazon EBS over many typical hard drives is that you can easily detach it from one server and attach it to another server using software commands. Usually, with other servers outside of AWS, this would require physically detaching the hard drive and physically attaching it to another server.
Additionally, if you use the Amazon Elastic File Storage (EFS) service, you will be able to attach the hard drive (block storage device) to multiple servers (EC2 instances). It significantly simplifies your maintenance and operations.
When using Amazon EBS, data is persisted. This means that data lives even after the server is shut down. Like other services, Amazon EBS provides high availability and durability.
Amazon EBS should not be confused with the instance store available in EC2 instances. EC2 instance stores deliver ephemeral storage for EC2 instances...