# High Availability

Alluxio is designed to be resilient and ensure data is always available, even in the face of component or infrastructure failures.

* [**UFS Fallback**](/ee-ai-en/ai-3.8-15.1.x/high-availability/ufs-fallback.md): If an Alluxio worker is unavailable, clients can automatically fall back to reading directly from the UFS, ensuring that read requests succeed without interruption.
* [**File Replication**](/ee-ai-en/ai-3.8-15.1.x/high-availability/multiple-replicas.md): Configure files to have multiple replicas across different Alluxio workers. If one worker becomes unavailable, clients can seamlessly fail over to another replica. This also boosts read performance for popular files by distributing the load.
* [**Multi-Availability Zone (Multi-AZ) Deployments**](/ee-ai-en/ai-3.8-15.1.x/high-availability/multi-az.md): Deploy Alluxio clusters across multiple availability zones (AZs). If an entire AZ goes down, clients can automatically fail over to an Alluxio cluster in another AZ, providing robust disaster recovery and uninterrupted service.


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://documentation.alluxio.io/ee-ai-en/ai-3.8-15.1.x/high-availability.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.