Appendix: Amazon EBS SSD storage types - AWS Prescriptive Guidance

Appendix: Amazon EBS SSD storage types

Amazon Elastic Block Store (Amazon EBS) provides the following solid state drive (SSD) backed volumes. For the most recent information, see Amazon EBS volume types in the Amazon EC2 documentation.

  General Purpose SSD Provisioned IOPS SSD

Volume type

gp3

gp2

io2 Block Express1

io2

io1

Durability

99.8% – 99.9% durability (0.1% – 0.2% annual failure rate)

99.8% – 99.9% durability (0.1% – 0.2% annual failure rate)

99.999% durability (0.001% annual failure rate)

99.999% durability (0.001% annual failure rate)

99.8% – 99.9% durability (0.1% – 0.2% annual failure rate)

Use cases

  • Low-latency interactive apps

  • Development and test environments

  • Low-latency interactive apps

  • Development and test environments

Workloads that require:

  • Sub-millisecond latency

  • Sustained IOPS performance

  • More than 64,000 IOPS or 1,000 MIB/s of throughput

  • Workloads that require sustained IOPS performance or more than 16,000 IOPs

  • I/O-intensive database workloads

  • Workloads that require sustained IOPS performance or more than 16,000 IOPs

  • I/O-intensive database workloads

Volume size

1 GiB – 16 TiB

1 GiB – 16 TiB

4 GiB – 64 TiB

4 GiB – 16 TiB

4 GiB – 16 TiB

Maximum IOPS per volume (16 KiB I/O)

16,000

16,000

256,000

64,0002

64,0002

Maximum throughput per volume

1,000 MiB/s

250 MiB/s3

4,000 MiB/s

1,000 MiB/s2

1,000 MiB/s2

Amazon EBS Multi-attach

Not supported

Not supported

Supported

Supported

Supported

Boot volume

Supported

Supported

Supported

Supported

Supported

1 io2 Block Express volumes are supported with R5b instances only. io2 volumes attached to an R5b instance during or after launch automatically run on Block Express. For more information, see io2 Block Express volumes in the Amazon EC2 documentation.

2 Maximum IOPS and throughput are guaranteed only on instances built on the Nitro System provisioned with more than 32,000 IOPS. Other instances guarantee up to 32,000 IOPS and 500 MiB/s. io1 volumes that were created before December 6, 2017 and that have not been modified since creation might not reach full performance unless you modify the volume.

3 The throughput limit is between 128 MiB/s and 250 MiB/s, depending on the volume size. Volumes smaller than or equal to 170 GiB deliver a maximum throughput of 128 MiB/s. Volumes larger than 170 GiB but smaller than 334 GiB deliver a maximum throughput of 250 MiB/s if burst credits are available. Volumes larger than or equal to 334 GiB deliver 250 MiB/s regardless of burst credits. gp2 volumes that were created before December 3, 2018 and that have not been modified since creation might not reach full performance unless you modify the volume.