Amazon Elastic Block Store (EBS)
Block storage software
Storage management software
- Features
- Ease of use
- Ease of management
- Quality of support
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What is Amazon Elastic Block Store (EBS)
Amazon Elastic Block Store (EBS) is a managed block storage service for Amazon EC2 that provides persistent volumes for operating systems, databases, and application data. It targets teams running workloads on AWS that need low-latency, instance-attached storage with configurable performance and durability options. EBS supports multiple volume types (SSD and HDD), snapshots to Amazon S3, and encryption, and it integrates with AWS identity, monitoring, and automation services.
Tight EC2 integration
EBS volumes attach directly to EC2 instances and support common operational actions such as resizing, changing volume type, and creating snapshots. This reduces the need to deploy and manage separate storage appliances for many cloud-native workloads. Native integration with AWS IAM, CloudWatch, and tagging supports centralized access control and operational visibility.
Multiple performance tiers
EBS offers SSD and HDD volume families designed for different IOPS, throughput, and cost profiles. Provisioned performance options allow teams to align storage characteristics with workload needs such as transactional databases versus throughput-oriented processing. This flexibility helps standardize on one block storage service while tuning per workload.
Snapshots and encryption support
EBS supports point-in-time snapshots that are stored in Amazon S3 and can be used for backup, cloning, and disaster recovery workflows. Volumes support encryption at rest using AWS Key Management Service (KMS) and can be combined with IAM policies for key usage control. These capabilities support common compliance and data protection requirements without third-party tooling.
AWS and AZ scope
EBS is designed for AWS and attaches within a single Availability Zone, which can complicate architectures that require cross-zone active-active storage. Cross-region or cross-account replication patterns typically rely on snapshots or additional AWS services rather than native synchronous replication. Organizations pursuing multi-cloud portability may need abstraction layers or alternative storage approaches.
Not a full storage platform
EBS provides block volumes but does not replace file or object storage services for shared access patterns or large-scale unstructured data. Advanced storage management features such as global namespace, NAS protocols, or integrated tiering across heterogeneous environments are outside EBS’s scope. Teams often combine EBS with other AWS storage services to cover broader requirements.
Cost and performance tuning complexity
Selecting volume types, sizing, and performance settings (IOPS/throughput) requires workload profiling and ongoing monitoring to avoid overprovisioning or bottlenecks. Snapshot storage and data transfer can add costs that are not always obvious in initial estimates. Performance characteristics can also depend on instance type limits and configuration, adding another tuning dimension.
Plan & Pricing
Pricing model: Pay-as-you-go (usage-based) Free tier/trial: Free Tier: 30 GB storage, 2 million I/O, 1 GB snapshot storage (AWS Free Tier). New customer Free Tier credits described on the official page (see notes).
Example costs (from AWS official EBS pricing page - example/region values shown):
- gp3 (General Purpose SSD): Storage $0.08 per GB‑month; 3,000 IOPS baseline free; $0.005 per provisioned IOPS‑month over 3,000; 125 MB/s baseline free; $0.06 per provisioned MB/s‑month over 125.
- gp2 (General Purpose SSD): Storage $0.10 per GB‑month (I/O included in GB price).
- io2 (Provisioned IOPS SSD): Storage $0.125 per GB‑month; provisioned IOPS charged (tiered) e.g., $0.065 per provisioned IOPS‑month for the first 32,000 IOPS and $0.046 per provisioned IOPS‑month for 32,001–64,000 IOPS (further tiering applies for io2 Block Express).
- io1 (Provisioned IOPS SSD): Storage example $0.125 per GB‑month; provisioned IOPS example $0.065 per provisioned IOPS‑month (example region).
- st1 (Throughput Optimized HDD): Storage $0.045 per GB‑month (example region).
- sc1 (Cold HDD): Storage $0.015 per GB‑month (example region).
Snapshot & related costs (examples from official page):
- Fast Snapshot Restore (FSR): charged in DSU‑Hours; example price: $0.75 per DSU‑Hour.
- EBS snapshot API (EBS direct APIs) example charges: ListSnapshotBlocks charged per request (example: $0.0006 per thousand requests in the example region), GetSnapshotBlock charged per SnapshotAPIUnit (example: $0.003 per thousand SnapshotAPIUnits), PutSnapshotBlock example: $0.006 per thousand SnapshotAPIUnits.
Billing cadence & minimums (official): storage, provisioned IOPS, and provisioned throughput billed in per‑second increments with a 60‑second minimum.
Notes: Actual rates vary by AWS Region and may differ from the example region values shown on the page; the EBS pricing page instructs customers to use the AWS Pricing Calculator or region selector for precise regional rates.
Seller details
Amazon Web Services, Inc.
Seattle, Washington, USA
2006
Subsidiary
https://aws.amazon.com/
https://x.com/awscloud
https://www.linkedin.com/company/amazon-web-services/
