# You can't configure DFS-R on a Multi-AZ or Single-AZ 2 file system
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Microsoft Distributed File System Replication (DFS-R) is not supported on Multi-AZ and Single-AZ 2 file systems.

Multi-AZ file systems are configured for redundancy across multiple access zones natively. Use the Multi-AZ deployment type for high availability across multiple Availability Zones. For more information, see [Availability and durability: Single-AZ and Multi-AZ file systems](high-availability-multiAZ.md).

## See also

* **Skills for AI coding assistants (optional).** AWS publishes reusable skills for Amazon FSx. To see which apply, search the Agent Toolkit for AWS catalog with `aws agent-toolkit search-skills --search-query fsx` — 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).