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Amazon DocumentDB (with MongoDB compatibility) now supports R8g.24xlarge and R8g.48xlarge instances

Published
July 10, 2026
https://aws.amazon.com/about-aws/whats-new/2026/07/amazon-documentdb-r8g-24xl-48xl/

Amazon DocumentDB Updates

Amazon DocumentDB (with MongoDB compatibility) now supports R8g.24xlarge and R8g.48xlarge database instances. These instances are powered by AWS Graviton4 processors and feature DDR5 memory, enabling higher throughput and support for larger working sets in memory.

  • R8g.24xlarge: 96 vCPUs, 768 GiB memory
  • R8g.48xlarge: 192 vCPUs, 1,536 GiB memory

These instances are ideal for high-concurrency transactional applications, large-scale document processing, and memory-intensive operational workloads.

What to do

  • Modify existing Amazon DocumentDB database clusters or create new ones through the AWS Management Console, CLI, or SDK.
  • R8g instances are available for Amazon DocumentDB 5.0+ on both Standard and IO-Optimized cluster storage configurations.

Source: AWS release notes




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