> ## Documentation Index
> Fetch the complete documentation index at: https://doc.lucidworks.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Fusion 5 Frequently Asked Questions

export const LwTemplate = ({title = "Key questions to get you started", icon = "sparkles", cta = "Powered by Agent Studio", linkHref = "https://lucidworks.com/demo/?utm_source=docs&utm_medium=referral&utm_campaign=docs_cta_ai"}) => {
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  useEffect(() => {
    const timer = setTimeout(() => {
      setIsLoaded(true);
    }, 500);
    return () => clearTimeout(timer);
  }, []);
  return <div className="lw-template-container">
      <Card title={title} icon={icon}>
        {isLoaded && <span dangerouslySetInnerHTML={{
    __html: `<lw-template id="a029c1a9-28be-427e-b0e1-5d918920246a"></lw-template
            >`
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        <Link href={linkHref} className="agent-studio-link text-left text-gray-600 gap-2 dark:text-gray-400 text-sm font-medium flex flex-row items-center hover:text-primary dark:hover:text-primary-light group-hover:text-primary group-hover:dark:text-primary-light">Powered by Lucidworks Agent Studio</Link>
      </Card>
    </div>;
};

[localhost link]: http://localhost:3000/docs/5/fusion/operations/faq

[mintlify link]: https://doc.lucidworks.com/docs/5/fusion/operations/faq

[old doc.lw link]: https://doc.lucidworks.com/fusion/5.9/oa0map

**Does Fusion use Custom Resource Definitions?**

Yes, Fusion 5 does utilize custom resource definitions. These CRDs are part of the install and are critical to the application. All CRDs are namespaced, following Kubernetes best practices for utilizing CRDs in a multi-tenant environment.

**Are any services installed at the cluster level?**

Yes, two services, Argo and Seldon-core are installed at the cluster level. These services, which are part of the ML/AI service infrastructure for Fusion, use web hooks, which must be installed at the cluster level. These web hooks are namespaced, following best practices for utilizing web hooks in a multi-tenant environment.

**Can I install Fusion 5 without using your Helm chart?**

Yes, but we strongly recommend that you use the Helm chart to install if you want to leverage Lucidworks support.

**Are there backup jobs used in disaster recovery situations for stateful services deployed to Kubernetes?**

There is no out-of-the-box backup solution for stateful services provided with Fusion. Lucidworks recommends having a plan in place to reindex data from its primary source as part of an overall disaster recovery strategy.

<LwTemplate />

## Other questions?

If you have a question about a resource not included here, please reach out to [Lucidworks support](https://support.lucidworks.com/)