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Amazon RDS Optimized Reads now supports R8gd and M8gd database instances

Published
November 18, 2025
https://aws.amazon.com/about-aws/whats-new/2025/11/amazon-rds-optimized-reads-r8gd-m8gd-database-instances

Amazon RDS Optimized Reads on R8gd and M8gd Instances

Amazon RDS now supports R8gd and M8gd database instances for Optimized Reads on Amazon Aurora PostgreSQL and RDS for PostgreSQL, MySQL, and MariaDB. These instances offer improved price-performance, with R8gd instances delivering up to 165% better throughput and up to 120% better price-performance over R6g instances for Aurora PostgreSQL.

Optimized Reads uses local NVMe-based SSD block storage to store ephemeral data, reducing data access to/from network-based storage and improving read latency and throughput. This results in improved query performance for complex queries and faster index rebuild operations. Aurora PostgreSQL Optimized Reads instances using the I/O-Optimized configuration additionally use local storage to extend their caching capacity.

What to do

  • Modify existing Aurora and RDS databases or create a new database using R8gd or M8gd instances through the AWS Management Console, CLI, or SDK.
  • These instances are available in the US East (N. Virginia, Ohio), US West (Oregon), Europe (Spain, Frankfurt), and Asia Pacific (Tokyo) Regions.
  • Refer to the pricing page for complete information on pricing and regional availability.
  • See the Aurora and RDS documentation for information on specific engine versions that support these DB instance types.

Source: AWS release notes




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