Amazon RDS for SQL Server supports read replica with additional storage volumes
Amazon Web Services has expanded its RDS for SQL Server service to support read replicas for database instances configured with additional storage volumes. The enhancement allows customers to create both same-region and cross-region read replicas for SQL Server databases that utilize AWS's additional storage volume feature, which enables scaling database storage up to 256 TiB by adding up to three storage volumes of 64 TiB each alongside the primary storage volume. When administrators create a read replica from a source database instance with additional storage volumes, the replica maintains the same storage layout and configuration as the source instance. However, after the initial setup, the storage volume configurations can be managed independently between the source and replica instances. The feature is immediately available across all AWS commercial regions and AWS GovCloud (US) regions, accessible through the AWS Management Console, CLI, and SDKs.
Why It Matters
This update addresses a significant limitation for enterprises running large SQL Server workloads on AWS that require both massive storage capacity and read scalability. By combining read replicas with additional storage volumes, organizations can now implement disaster recovery and read-scaling strategies for their largest SQL Server databases without being constrained by single-volume storage limits. This is particularly valuable for data-intensive applications like analytics, reporting, and business intelligence workloads that need to scale beyond traditional storage boundaries while maintaining high availability.
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