Learning about Amazon EBS and instance backed store
Like virtual servers in your on-premises environment, EC2 instances require accessible block storage volume to host the instance operating system, data, and applications that need to run on the server. AWS offers two types of block storage options: Elastic Block Store and instance store volumes.
Amazon Elastic Block Store
Amazon Elastic Block Store offers a high-performance block storage service for your EC2 instances. These act as virtual hard drives for your virtual servers deployed in the cloud. Amazon EBS is a network storage service similar in nature to the way you would attach a storage volume from a Storage Area Network (SAN) to your VMs deployed on VMware, in an on-premises environment.
You would provision the required EBS volume, such as 8 GB, 30 GB, 1,000 GB, or whatever size you require, and attach it to your EC2 instance. EC2 instances require a root volume (or a system drive on Windows machines, such as the ...