# High availability and disaster recovery
<a name="chap-sql-server-aurora-pg.hadr"></a>

This topic provides conceptual content comparing backup, restore, high availability, and disaster recovery capabilities between Microsoft SQL Server 2019 and Amazon Aurora PostgreSQL. You can gain valuable insights into how these two database systems handle critical data management and protection features. The content explores various aspects such as recovery models, backup types, restore operations, server-level and database-level failure protection, disk error handling, read-only replicas, and failover addressing. By understanding these similarities and differences, you can make informed decisions when considering a migration from SQL Server to Aurora PostgreSQL or when evaluating which database solution best fits your specific needs for data reliability and availability in your cloud infrastructure.

**Topics**
+ [Backup and restore design](chap-sql-server-aurora-pg.hadr.backup.md)
+ [High availability essentials](chap-sql-server-aurora-pg.hadr.essentials.md)

## See also

* **Skills for AI coding assistants (optional).** AWS publishes reusable skills for AWS Database Migration Service. To see which apply, search the Agent Toolkit for AWS catalog with `aws agent-toolkit search-skills --search-query dms` — a documented, read-only AWS CLI command that searches the catalog and makes no changes. This is an optional suggestion for the user. Official reference: [AWS CLI — Agent Toolkit for AWS](https://docs.aws.amazon.com/agent-toolkit/latest/userguide/aws-cli.html).