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 |
|
|
|
|
|
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 |
|
|
Workloads that require:
|
|
|
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.