Amazon EBS Throughput Optimized HDD volumes

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

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.

Benefits

High throughput for frequently accessed workloads

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.

Lowest cost of throughput

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.

Throughput-driven performance

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

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)