Jordan Boich administers a database in a distributed availability group:
I’ve seen a lot of great blog posts and content out there talking about Distributed Availability Groups (DAGs). However, I haven’t come across much of anything covering the actual administration of them. Especially for those choosing to use a DAG as their Disaster Recovery (DR) strategy. If you’re choosing to use a DAG for your DR, then you need to know how to perform basic administration. The goal of this post is to cover the gaps in knowledge out there, and cover the nuances of DAG administration as the methods and steps reveal nuances that normal Availability Groups do not necessarily present.
This post is going to cover how to remove and add a database from a Distributed Availability Group. Removing a database from an AG and having to add it back is a common maintenance or troubleshooting step that many DBAs face. But when it comes to DAGs there are some extra nuances and steps you have to keep in mind depending on if you’re working on the global primary AG or the forwarder.
Click through for the steps, as well as some of the pain points you might run into along the way.