# Page Not Found

The URL `recover-after-hardware-failure/failover-active-passive` does not exist. This page may have been moved, renamed, or deleted.

## Suggested Pages

You may be looking for one of the following:
- [Failover - Active/Passive](https://docs.nodeum.io/data-archiving/system-reliability/failover-active-passive.md)
- [Failover Procedure - One Site](https://docs.nodeum.io/data-archiving/system-reliability/failover-procedure-one-site.md)
- [Architecture](https://docs.nodeum.io/data-archiving/architecture.md)
- [Alerts](https://docs.nodeum.io/data-archiving/alerts.md)
- [Enable SSL Certificate Container accessible on S3 Protocol](https://docs.nodeum.io/security-guide/enable-ssl-certificate-container-accessible-on-s3-protocol.md)

## How to find the correct page

If the exact page cannot be found, you can still retrieve the information using the documentation query interface.

### Option 1 — Ask a question (recommended)

Perform an HTTP GET request on the documentation index with the `ask` parameter:

```
GET https://docs.nodeum.io/data-archiving/system-reliability/failover-active-passive.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.

### Option 2 — Browse the documentation index

Full index: https://docs.nodeum.io/sitemap.md

Use this to discover valid page paths or navigate the documentation structure.

### Option 3 — Retrieve the full documentation corpus

Full export: https://docs.nodeum.io/llms-full.txt

Use this to access all content at once and perform your own parsing or retrieval. It will be more expensive.

## Tips for requesting documentation

Prefer `.md` URLs for structured content, append `.md` to URLs (e.g., `/data-archiving/system-reliability/failover-active-passive.md`).

You may also use `Accept: text/markdown` header for content negotiation.