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Amazon Elastic Block Store (EBS) provides raw block-level storage that can be attached to Amazon EC2 instances and is used by Amazon Relational Database Service (RDS).cite-ref-1[1] It is one of the two block-storage options offered by AWS, with the other being the EC2 Instance Store.cite-ref-2[2]

Amazon EBS provides a range of options for storage performance and cost. These options are divided into two major categories: SSD-backed storage for transactional workloads, such as databases and boot volumes (performance depends primarily on IOPS), and disk-backed storage for throughput intensive workloads, such as MapReduce and log processing (performance depends primarily on MB/s).

• Use case

• History

• Volume types

• Features

• See also

• References

• External links

In a typical use case, using EBS would include formatting the device with a filesystem and mounting it. EBS supports advanced storage features, including snapshotting and cloning. As of September 2020, EBS volumes can be up to 2 TiB in size using the MBR partitioning scheme, and up to 16 TiB using the GPT partitioning scheme.cite-ref-3[3]

EBS volumes are built on replicated back end storage, so that the failure of a single component will not cause data loss.

EBS was introduced by Amazon in August 2008.cite-ref-4[4] As of March 2018 30 GB of free space was included in the free tier of Amazon Web Services 2017.cite-ref-5[5]

The following table shows use cases and performance characteristics of current generation EBS volumes:cite-ref-6[6]

| | Solid state drives (SSD) | Solid state drives (SSD) | Solid state drives (SSD) | Hard disk drives (HDD) | Hard disk drives (HDD) |

|---|---|---|---|---|---|

| Volume type | EBS Provisioned IOPS SSD (io1) (since 2012) [ 7 ] | EBS General Purpose SSD (gp2) [ a ] | EBS General Purpose SSD (gp3) | Throughput Optimized HDD (st1) | Cold HDD (sc1) |

| Short description | Highest performance SSD volume designed for latency-sensitive transactional workloads | General Purpose SSD volume that balances price performance for a wide variety of transactional workloads | Lowest cost SSD volume that balances price performance for a wide variety of transactional workloads | Low cost HDD volume designed for frequently accessed, throughput intensive workloads | Lowest cost HDD volume designed for less frequently accessed workloads |

| Use cases | I/O-intensive NoSQL and relational databases | Boot volumes, low-latency interactive apps, dev & test | Boot volumes, low-latency interactive apps, dev & test | Big data, data warehouses, log processing | Colder data requiring fewer scans per day |

| API name | io1 | gp2 | gp3 | st1 | sc1 |

| Volume size | 4 GiB - 16 TiB | 1 GiB - 16 TiB | 1 GiB - 16 TiB | 500 GiB - 16 TiB | 500 GiB - 16 TiB |

| Max IOPS [ b ] /volume | 64,000 | 16,000 | 16,000 | 500 | 250 |

| Max throughput/volume | 1000 MB /s | 250 MB/s | 1000 MB/s | 500 MB/s | 250 MB/s |

| Max IOPS/instance | 260,000 | 260,000 | 260,000 | 260,000 | 260,000 |

| Max throughput/instance | 7,500 MB/s | 7,500 MB/s | 7,500 MB/s | 7,500 MB/s | 7,500 MB/s |

| Price | $0.125/GB-month $0.065/provisioned IOPS | $0.10/GB-month | $0.08/GB-month $0.005/provisioned IOPS over 3000 | $0.045/GB-month | $0.025/GB-month |

| Dominant performance attribute | IOPS | IOPS | IOPS | MB/s | MB/s |

cite-note-81. Default volume type

cite-note-92. io1/gp2 based on 16 KiB I/O size, st1/sc1 based on 1 MiB I/O size

Amazon EBS provides several features that assist with data management, backups, and performance tuning:

• The Amazon Data Lifecycle Manager is an automated mechanism that can back up data from EBS volumes, creating and deleting EBS snapshots on a predefined schedule.cite-ref-10[8]

• Elastic Volumes makes it possible to adapt volume size to an application's current needs, using Amazon CloudWatch and AWS Lambda to automate volume changes.

• Amazon EBS Encryption encrypts data at rest for EBS volumes and snapshots, without having to manage a separate secure key infrastructure.

• EBS volume tagging makes it possible to find and filter EBS resources on the Amazon Console and CLI.cite-ref-11[9]

• Software-level RAID arrays make it possible to create groups of EBS volumes with high performance network throughput between them, using the standard RAID protocol.cite-ref-12[10]

• Amazon Elastic File System (EFS)

• Amazon S3

cite-note-11. ↑ "DB Instance Storage - Amazon Relational Database Service". docs.aws.amazon.com.

cite-note-22. ↑ "EC2 Instance Store vs EBS". May 31, 2022. Archived from the original on June 16, 2022. Retrieved June 16, 2022.

cite-note-33. ↑ "Constraints on the size and configuration of an EBS volume". Amazon Web Services Documentation. Archived from the original on 2017-10-11. Retrieved Sep 11, 2020.

cite-note-44. ↑ "Amazon EBS (Elastic Block Store) - Bring Us Your Data". Amazon Web Services Blog. August 20, 2008. Archived from the original on March 28, 2011. Retrieved May 31, 2013.

cite-note-55. ↑ "AWS Free Tier". Amazon Web Services, Inc.

cite-note-66. ↑ "Amazon Elastic Block Store (Amazon EBS) – Details – Amazon Web Services (AWS)". Amazon Web Services, Inc. Retrieved 2017-12-31.

cite-note-73. "Announcing Provisioned IOPS for Amazon EBS". Amazon Web Services, Inc.

cite-note-108. ↑ "Amazon EBS Features". Amazon Web Services. Archived from the original on 2018-09-20. Retrieved Sep 11, 2020.

cite-note-119. ↑ "7 Little-Known Amazon EBS Features You Should Be Using". Sand Hill. January 17, 2020. Archived from the original on 2020-01-27. Retrieved Sep 11, 2020.

cite-note-1210. ↑ "AWS EBS: A Complete Guide and Five Functions You Should Start Using". Cloud Central Blog. June 4, 2019. Archived from the original on 2017-07-26. Retrieved Sep 11, 2020.

• Amazon Elastic Block Store main page