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Amazon Elastic Block Store

Amazon EBS Throughput Optimized HDD volumes

HDD volumes offering up to 500 MB/s of throughput per volume

Get started with st1 volumes

Overview

Throughput Optimized HDD (st1) volumes provide low-cost magnetic storage that defines performance in terms of throughput rather than IOPS. This volume type is a good fit for frequently accessed, large, sequential I/O workloads such as Amazon EMR, ETL, data warehouses, and log processing. Bootable st1 volumes are not supported and we recommend that customers with workloads performing small, random I/O use  gp3 volumes. For more information, see  Inefficiency of small read/writes on HDD.
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Benefits

Throughput Optimized HDD volumes are backed by hard disk drives (HDDs) and they are ideal for frequently accessed, throughput-intensive workloads with large datasets and large I/O sizes, such as MapReduce, Kafka, log processing, data warehouse, and ETL workloads.
Throughput Optimized HDD volumes offer the lowest cost for the amount of baseline throughput delivered, with baseline throughput of 40 MB/s per TB and bursting of up to 250 MB/s per TB and 500 MB/s per volume. For customers looking to cost-effectively support high throughput, IO intensive workloads, st1 can be an ideal solution.
These volumes deliver performance, measured in MB/s of throughput, and include the ability to burst up to 250 MB/s per TB, with a baseline throughput of 40 MB/s per TB and a maximum throughput of 500 MB/s per volume.

Product Details

Specification
Details
Volume type
Throughput Optimized HDD (st1)
Durability
99.8% - 99.9% durability (0.1% - 0.2% annual failure rate)
Use cases

Big data

Data warehouses

Log processing
API Name
st1
Volume size
125 GiB - 16 TiB
Max IOPS per volume (1 MiB I/O)
500
Max throughput per volume
500 MiB/s
Max throughput per instance
12,500 MB/s
Amazon EBS Multi-attach
Not supported
Price
$0.045 / GB-mo (N. Virginia)