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Amazon EC2

Amazon EC2 R6a Instances

Run memory-optimized instances powered by 3rd generation AMD EPYC processors

Get started with R6a Instances

Why Amazon EC2 R6a Instances?

Amazon EC2 R6a instances are powered by 3rd generation AMD EPYC processors and deliver up to 35% better price performance compared to R5a instances and 10% lower cost than comparable x86-based Amazon EC2 instances. R6a instances feature an 8:1 ratio of memory to vCPU, just like R5a instances, and support increased sizes up to 192 vCPUs per instance. These instances are SAP-Certified and are an ideal fit for memory-intensive workloads, such as SQL and NoSQL databases; distributed web scale in-memory caches, such as Memcached and Redis; in-memory databases and real-time big data analytics, such as Apache Hadoop and Apache Spark clusters; and other enterprise applications.

AWS and AMD Partnership

AWS and AMD continue to collaborate to provide you with cloud services that are designed to meet current and future computing requirements. Please visit the AWS and AMD partner page for more information.

Benefits

R6a instances deliver up to 35% better price performance than R5a instances and 10% lower cost than comparable x86-based EC2 instances. R6a instances also offer new larger sizes with up to 192 vCPUs and 1,536 GiB of memory, letting you consolidate workloads on fewer instances and save on per-core licensing costs.

R6a instances add to the broadest and deepest selection of EC2 instances in the cloud and provide customers 11 instance sizes that feature varying amounts of vCPU, memory, networking, and storage. This lets you run a broad range of memory-intensive workloads.

R6a instances are built on the AWS Nitro System, a combination of dedicated hardware and lightweight hypervisor, which delivers practically all of the compute and memory resources of the host hardware to your instances for better overall performance and security.

Features

Amazon EC2 R6a instances are powered by 3rd generation AMD EPYC processors (code named Milan) with an all-core turbo frequency of 3.6 GHz and include support for AMD Transparent Secure Memory Encryption (TSME), which encrypts data in physical memory. R6a instances support the new Advanced Vector Extension (AVX-2) instructions to run cryptographic algorithms faster. They also support AMD SEV-SNP. For more information about AMD SEV-SNP and pricing, refer to this documentation.

R6a instances support 40 Gbps bandwidth to Amazon Elastic Block Store (EBS) in the largest size, which is more than double that of R5a instances. R6a instances also support up to 50 Gbps networking, which is 2.5 times that of R5a instances. You can also enable Elastic Fabric Adapter (EFA) on the 48xlarge size of R6a.

The AWS Nitro System is a rich collection of building blocks that offloads many of the traditional virtualization functions to dedicated hardware and software to deliver high performance, high availability, and high security while also reducing virtualization overhead.

Product details

R6a instances are powered by 3rd generation AMD EPYC processors and are an ideal fit for memory-intensive workloads.

Instance size
vCPU
Memory (GiB)
Instance storage (GB)
Network bandwidth (Gbps)
EBS bandwidth (Gbps)
r6a.large
2
16
EBS-Only
Up to 12.5
Up to 10
r6a.xlarge
4
32
EBS-Only
Up to 12.5
Up to 10
r6a.2xlarge
8
64
EBS-Only
Up to 12.5
Up to 10
r6a.4xlarge
16
128
EBS-Only
Up to 12.5
Up to 10
r6a.8xlarge
32
256
EBS-Only
12.5
10
r6a.12xlarge
48
384
EBS-Only
18.75
15
r6a.16xlarge
64
512
EBS-Only
25
20
r6a.24xlarge
96
768
EBS-Only
37.5
30
r6a.32xlarge
128
1024
EBS-Only
50
40
r6a.48xlarge
192
1536
EBS-Only
50
40
r6a.metal
192
1536
EBS-Only
50
40