# Upgrading from an older RAS version

If you have an existing Farm running RAS v16.x and would like to join it as a Tenant to Tenant Broker, follow these steps:

1. Upgrade the Farm to RAS 17.1 (or newer).
2. To join your Farm as a Tenant to Tenant Broker, follow the instructions in the [**Deploying Tenant Broker and Tenants**](/landing/ras-admin-guide/v19-en-us/parallels-ras-19-administrators-guide/ras-multi-tenant-architecture/deploying-tenant-broker-and-tenants.md) section.
3. Once the Farm is joined, you can remove local RAS Secure Gateways if you are not planning on using them for local connections. See [**Implementation overview**](/landing/ras-admin-guide/v19-en-us/parallels-ras-19-administrators-guide/ras-multi-tenant-architecture/architecture-description/implementation-overview.md) for additional info.


---

# 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://docs.parallels.com/landing/ras-admin-guide/v19-en-us/parallels-ras-19-administrators-guide/ras-multi-tenant-architecture/upgrading-from-an-older-ras-version.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.