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Implement high availability in Amazon RDS for SQL Server Web Edition using block-level replication

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This article explains how to implement high availability for Amazon RDS SQL Server Web Edition using block-level replication in Multi-AZ deployments.

  • SQL Server Web Edition now supports Multi-AZ with block-level replication for high availability
  • Requires SQL Server 2022 Web Edition version 16.00.4215.2.v1 or higher
  • Automatic failover to standby instance in different Availability Zone within 60-120 seconds
  • Data synchronously replicated at block level including server-level objects
  • DNS endpoint remains unchanged during failover, no application reconfiguration needed
  • Can create new Multi-AZ instance or convert existing Single-AZ to Multi-AZ
  • Deployment via AWS Console, CLI, or SDKs with step-by-step configuration guide provided
  • Failover testing recommended in non-production environment before production use

This release brings enterprise-grade availability to SQL Server Web Edition, reducing operational overhead while maintaining complete data redundancy and minimal service interruption during failovers.

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