> For the complete documentation index, see [llms.txt](https://docs.parallels.com/landing/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.parallels.com/landing/ras-admin-guide/v21-de-de/mandantenfaehige-architektur-des-ras/upgrade-von-einer-aelteren-ras-version.md).

# Upgrade von einer älteren RAS-Version

Wenn Sie eine bestehende Farm haben, auf der RAS v16.x läuft, und ihr als Mandant-zu-Mandant-Makler beitreten möchten, befolgen Sie diese Schritte:

1. Upgrade der Farm auf RAS 17.1 (oder neuer).
2. Um Ihrer Farm als Mandant-zu-Mandant-Makler beizutreten, folgen Sie den Anweisungen im Abschnitt [**Bereitstellung von Mandantenmakler und Mandanten**](https://download.parallels.com/ras/v19/docs/de_DE/Parallels-RAS-19-Administrators-Guide/45470.htm).
3. Sobald der Beitritt zur Serverfarm erfolgt ist, können Sie lokale RAS Secure Gateways entfernen, wenn Sie nicht vorhaben, sie für lokale Verbindungen zu verwenden. Weitere Informationen finden Sie unter [**Überblick über die Implementierung**](https://download.parallels.com/ras/v19/docs/de_DE/Parallels-RAS-19-Administrators-Guide/45438.htm).


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