How is an Amazon EBS io2 Block Express volume different from io1 and io2 volumes?

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I don't know how Amazon Elastic Block Store (Amazon EBS) io2 Block Express volumes differ from io1 and io2 volumes.

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io1, io2, and io2 Block Express are all Provisioned input/output operations per second (IOPS) SSD volumes. However, io2 Block Express volumes can deliver higher throughput and IOPS and support larger storage capacity. For more information, see Provisioned IOPS SSD io1 volumes.

The following Amazon Elastic Compute Cloud (Amazon EC2) instance types support io2 Block Express volumes:

  • c7g
  • c6in
  • m6in
  • m6idn
  • m7g
  • r5b
  • r6in
  • r6idn
  • r7g
  • trn1
  • x2idn
  • x2iedn

Note: io2 Block Express volumes are available on all Nitro-based EC2 instances.

When you attach an io2 volume to these EC2 instance types, the volume automatically becomes an io2 Block Express volume.

The price for EBS volume types depends on storage and IOPS. The price for storage between the volume types is the same. However, the price for IOPS varies depending on the number of IOPS that you provision. For more information, see Amazon EBS pricing, and then choose your AWS Region from the Region dropdown list.

AWS OFFICIAL
AWS OFFICIALUpdated 8 months ago
3 Comments

On Nov 21, 2023, Amazon Elastic Block Store (EBS) announced that io2 Block Express volumes are available on all EC2 instances built on the Nitro system. https://aws.amazon.com/about-aws/whats-new/2023/11/amazon-elastic-block-store-io2-block-express-nitro/

io2 also has much higher durability than io1. There is a comparison here: https://aws.amazon.com/ebs/provisioned-iops/

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EXPERT
replied a year ago

Thank you for your comment. We'll review and update the Knowledge Center article as needed.

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MODERATOR
replied a year ago

All io2 volumes created after November 21, 2023 are io2 Block Express volumes. io2 volumes created before November 21, 2023 can be converted to io2 Block Express volumes by modifying the IOPS or size of the volume. https://docs.aws.amazon.com/ebs/latest/userguide/ebs-volume-types.html

See Amazon EBS volume types documentation for differences between io1 and io2 block express.

AWS
replied 4 months ago