> 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/v22-ja-jp/ras-connection-broker.md).

# RAS Connection Broker

RAS コネクションブローカーは、公開済みアプリケーションおよびデスクトップの負荷分散を行います。RAS コネクションブローカーは、Parallels RAS をインストールしたサーバーに自動的にインストールされ、プライマリ コネクションブローカーとして指定されます。各サイトにはプライマリ RAS コネクションブローカーが 1 つ必要ですが、セカンダリ コネクションブローカーを追加することも可能です。 セカンダリ接続ブローカーの目的は、プライマリ RAS 接続ブローカーに障害が発生した場合でも、ユーザーがサービスの中断を経験しないようにすることです。この章では、サイトに RAS 接続ブローカーを追加する方法と、その設定方法について説明します。


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