Volume
A volume in AWS refers to a block storage device that can be attached to an EC2 instance.
Description
In the context of AWS, a volume is a persistent block storage resource that can be used with Amazon Elastic Compute Cloud (EC2) instances. AWS provides Elastic Block Store (EBS) volumes, which are highly available and durable. These volumes can store data and are particularly useful for applications that require a database, file system, or any other type of storage that must persist beyond the life of the EC2 instance. Volumes can be created, resized, and attached to instances as needed, allowing for flexibility in managing storage resources. EBS volumes come in various types optimized for different performance needs, including SSD (Solid State Drives) for high-performance applications and HDD (Hard Disk Drives) for cost-effective storage. Users can also create snapshots of volumes for backup and disaster recovery purposes, making them an essential aspect of data management in the AWS ecosystem.
Examples
- An Amazon EBS General Purpose SSD volume can be used for applications like databases and boot volumes due to its balanced price and performance.
- A Snapshot of an EBS volume can be created to back up data, allowing users to restore volumes to a previous state.
Additional Information
- EBS volumes can be attached to a single EC2 instance at a time, but multiple volumes can be attached to the same instance for increased storage capacity.
- AWS offers different volume types such as Provisioned IOPS SSD, Throughput Optimized HDD, and Cold HDD, catering to various performance and cost requirements.