# Amazon Elastic Block Store (Amazon EBS)

Cloud service · AWS. Updated 2026-10-29. Page: https://blowstack.com/tools/cloud-services-hub/amazon-elastic-block-store-(amazon-ebs)

> Amazon Elastic Block Store (Amazon EBS) is a high-performance block storage service designed for use with Amazon Elastic Compute Cloud (EC2) for both throughput and transaction-intensive workloads at any scale.

Practice exams covering Amazon Elastic Block Store (Amazon EBS): [CLF-C02 AWS Certified Cloud Practitioner](https://blowstack.com/practice-exams/aws-certified-cloud-practitioner), [SOA-C03 AWS Certified CloudOps Engineer - Associate](https://blowstack.com/practice-exams/aws-certified-cloudops-engineer-associate), [DOP-C02 AWS Certified DevOps Engineer - Professional](https://blowstack.com/practice-exams/aws-certified-devops-engineer-professional), [MLA-C02 (beta) AWS Certified Machine Learning Engineer - Associate](https://blowstack.com/practice-exams/aws-certified-machine-learning-engineer-associate), [SCS-C03 AWS Certified Security - Specialty](https://blowstack.com/practice-exams/aws-certified-security-specialty), [SAA-C03 AWS Certified Solutions Architect - Associate](https://blowstack.com/practice-exams/aws-certified-solutions-architect-associate), [SAP-C02 AWS Certified Solutions Architect - Professional](https://blowstack.com/practice-exams/aws-certified-solutions-architect-professional).

## 5 key features of Amazon Elastic Block Store (Amazon EBS)

Amazon Elastic Block Store (Amazon EBS) provides highly durable and available block storage with features like snapshot backups, scalability, automatic replication, encryption, and easy integration with EC2 instances.

1. **High Durability**: Amazon EBS automatically replicates volume data within a single Availability Zone to protect against component failures. io2 Block Express volumes are designed for 99.999% durability.
2. **Snapshot Features**: EBS allows you to take point-in-time snapshots of your volumes, which are persisted to Amazon S3 for long-term durability. These snapshots can be used for data backups, to create new EBS volumes, or to move volumes across Availability Zones.
3. **Scalability and Performance**: Amazon EBS provides the ability to increase storage capacity and tune performance with a few clicks, offering various volume types that cater to different use cases, such as throughput-optimized HDDs or provisioned IOPS SSDs for high-intensity workloads.
4. **Encryption**: With Amazon EBS, you can encrypt your volumes and snapshots with AES-256 encryption algorithms, ensuring that your data is protected both at rest and in transit between EBS and EC2 instances.
5. **Easy Integration**: Amazon EBS is natively integrated with Amazon EC2, providing a seamless user experience for attaching, detaching, and managing storage volumes with EC2 instances without downtime.

## Where Amazon Elastic Block Store (Amazon EBS) is used

Amazon EBS serves a wide range of applications including high-performance computing, enterprise applications, boot volumes for EC2 instances, time-sensitive workloads, and scalable, secure data storage.

1. **High-Performance Computing (HPC)**: Amazon EBS provides the high IOPS and throughput needed by HPC applications to process large datasets rapidly, making it suitable for tasks like genomic sequencing, computational chemistry, financial risk modeling, and other compute-intensive applications.
2. **Enterprise Grade Applications**: For applications like SAP, Oracle, and Microsoft SQL Server that require high availability, durability, and reliability, Amazon EBS ensures that critical data is replicated within a single Availability Zone, providing the backbone for supporting enterprise-level database deployments and operations.
3. **Boot Volumes for EC2 Instances**: EBS volumes can be used as primary storage for data that needs to persist beyond the life of an instance, such as system software and applications, making it ideal for boot volumes of EC2 instances where the OS and other applications are stored.
4. **Time-sensitive Applications and Workloads**: With its ssd-backed volumes that offer low-latency performance, Amazon EBS is well-suited for time-sensitive applications that require quick access to data, such as real-time databases or interactive web applications.
5. **Scalable and Secure Data Storage**: Amazon EBS allows for secure, scalable storage solutions that can grow with your business needs, providing encryption at rest for sensitive data and ensuring that your storage scales seamlessly with your application or workload requirements.

## How Amazon Elastic Block Store (Amazon EBS) is priced

Amazon EBS pricing includes options for SSD and HDD volumes; costs are based on provisioned storage size, IOPS for SSDs, and data transfer out of AWS region.

- **General Purpose SSD (gp2 & gp3)**: Charged per GB-month of provisioned storage. gp3 offers cost-effective storage that is ideal for a broad range of workloads, with 3,000 IOPS and 125 MB/s throughput included; additional provisioned IOPS and throughput are charged separately.
- **Provisioned IOPS SSD (io1 & io2)**: Best for I/O-intensive workloads, especially those requiring consistent IOPS performance. Pricing is based on the size of the volume and the amount of IOPS provisioned.
- **Throughput Optimized HDD (st1)**: Low-cost HDD volume designed for frequently accessed, throughput-intensive workloads. Charged per GB-month of provisioned storage.
- **Cold HDD (sc1)**: Lowest cost HDD volume designed for less frequently accessed workloads. Charged per GB-month of provisioned storage.
- **Magnetic volumes**: Previous generation volume. Charged per GB-month of provisioned storage and per-million I/O requests.
- **EBS Snapshots**: Snapshot storage is charged per GB-month stored, with separate Standard and Archive rates. Archive retrieval incurs an additional per-GB charge, and deletion or permanent restoration before the 90-day minimum retention period incurs a prorated charge for the remaining days.
- **Fast Snapshot Restore**: Charged in Data Services Unit-Hours for each snapshot and each Availability Zone where enabled, billed per minute with a one-hour minimum. Charges continue until Fast Snapshot Restore is disabled.
- **Provisioned Rate for Volume Initialization**: Charged for each volume based on the full snapshot size and the specified volume initialization rate, independently of EBS volume costs.
- **Volume Clones**: The cloning operation is charged based on the size of the source volume's written blocks at clone creation. The resulting volume is billed separately as a standard EBS volume.
- **EBS direct APIs for Snapshots**: ListChangedBlocks and ListSnapshotBlocks are charged per thousand requests. GetSnapshotBlock and PutSnapshotBlock are charged per thousand SnapshotAPIUnits.
- **Time-based Snapshot Copy**: Charged per GB of snapshot data copied at a rate determined by the requested completion duration.
- **Recycle Bin for EBS Volumes**: Volumes retained in Recycle Bin are billed at the same rate as EBS volumes.
- **Recycle Bin for EBS Snapshots**: Snapshots retained in Recycle Bin are billed at the same rate as EBS snapshots.
- **AWS Backup-managed EBS Snapshots**: Storage and restore of EBS snapshots managed by AWS Backup use the same rates as EBS snapshots; additional AWS Backup capabilities may incur additional charges.
- **AWS Free Tier**: Starting July 15, 2025, new AWS customers receive up to $200 in Free Tier credits applicable to eligible services including EBS. The free plan lasts six months after account creation, and credits must be used within 12 months of account creation.

## Services Amazon Elastic Block Store (Amazon EBS) works with

- **[Amazon EC2](https://blowstack.com/tools/cloud-services-hub/amazon-ec2)**: Amazon EBS provides persistent block storage for Amazon EC2 instances. EBS volumes can be attached to EC2 instances and provide storage that persists independently of the lifecycle of the instance.
- **[AWS Backup](https://blowstack.com/tools/cloud-services-hub/aws-backup)**: Amazon EBS integrates with AWS Backup to provide a centralized backup service. This allows you to automate and manage backups across AWS services, including EBS volumes.
- **[Amazon CloudWatch](https://blowstack.com/tools/cloud-services-hub/amazon-cloudwatch)**: Amazon EBS integrates with Amazon CloudWatch to provide monitoring and logging capabilities. You can monitor performance metrics, such as IOPS and throughput, and set alarms to be notified of specific metrics.
- **[Amazon EC2 Auto Scaling](https://blowstack.com/tools/cloud-services-hub/amazon-ec2-auto-scaling)**: Amazon EBS can be used with Amazon EC2 Auto Scaling to automate the scaling of EC2 instances. When EC2 instances are scaled up or down, EBS volumes can be automatically attached or detached accordingly.

## What is Amazon Elastic Block Store (Amazon EBS)

Amazon Elastic Block Store, commonly referred to as Amazon EBS, is a high-performance block storage service designed to be used with Amazon Elastic Compute Cloud (EC2) for both throughput and transaction-intensive workloads at any scale. A fundamental building block of Amazon's cloud computing platform, EBS provides durable, block-level storage volumes that can be attached to a running Amazon EC2 instance, offering the flexibility, availability, and durability needed for mission-critical applications.

At its core, Amazon EBS is engineered to deliver high availability and reliability. EBS volumes are automatically replicated within their Availability Zone to prevent loss of data due to the failure of any single component. This replication ensures that applications running on an instance can achieve high levels of redundancy and fault tolerance, without compromising on performance.

One of the remarkable aspects of Amazon EBS is its performance characteristics. It supports a range of volume types that cater to different use cases. For example, Provisioned IOPS SSD (io1 and io2) volumes are designed for I/O-intensive workloads, particularly databases, that require consistent and low-latency performance. On the other hand, General Purpose SSD (gp2 and gp3) volumes offer a balance between cost and performance, making them suitable for a wide variety of applications. Throughput Optimized HDD (st1) and Cold HDD (sc1) volumes, meanwhile, are cost-effective solutions for workloads that are less sensitive to latency, such as big data analysis, logs, or backup systems.

io2 Block Express uses the latest generation of EBS storage server architecture for consistent sub-millisecond latency. A single io2 Block Express volume supports up to 256,000 IOPS, 4 GiB/s throughput, and 64 TiB of storage.

Beyond its performance capabilities, Amazon EBS is valued for its scalability and flexibility. Volumes can be easily resized, and performance can be scaled up or down with minimal friction. This means that as an application's storage requirements evolve, EBS can adapt, ensuring that resources are aligned with needs and costs are controlled efficiently.

Another key feature of Amazon EBS is its snapshot facility, which allows users to take point-in-time backups of volumes. These snapshots are stored in Amazon S3, providing durability and enabling geographically separate backups for disaster recovery purposes. Snapshots can be used to instantiate multiple new volumes, migrate volumes across EC2 instances, or restore a previous state, providing vital data protection and operational flexibility.

EBS snapshots have Standard and Archive storage tiers. Standard snapshots are incremental, while Archive snapshots are full copies of the block data.

In summary, Amazon Elastic Block Store stands out as a robust, scalable, and flexible block storage service that is integral to the Amazon cloud ecosystem. It caters to a wide array of use cases ranging from high performance database applications to cost-effective bulk storage solutions. With its strong emphasis on durability, performance, and ease of use, Amazon EBS is a cornerstone for businesses looking to build resilient, efficient, and scalable cloud-based architectures.