Amazon RDS extended support for restoring Transparent Data Encryption (TDE) enabled SQL Server databases to Multi-AZ deployments and instances with read replicas in the same region. Earlier support was limited to Single-AZ instances, requiring configuration changes for availability.
The process involves backing up the TDE certificate, storing it in Amazon S3, and restoring the TDE-enabled database with native backup and restore methods. This enhancement simplifies encrypted database recovery and migration workflows where high availability and encryption are both required. The feature is region-wide for supported RDS SQL Server instances.
Source & further reading
Amazon RDS for SQL Server now supports restoring TDE databases on Mult-AZ instances ↗Source published 2026-07-27. This report was prepared with AI assistance from the linked primary-source material. Claims and limitations should be checked against the original announcement or research.