DAG Database Switchover

Generally there are two situations the Databases need to be switchovered from one server to another: Maintenance and Failover. For Maintenance, it is often a manul process. For instance, you want to install a patch and restart the active server. Before you do it, you need to mannualy activate the Database on the standby server. … Continue reading DAG Database Switchover


What is DAG? (part 2)

I took a while Today to figure out how the DAG really work behind. And I will not walk through the whole steps of building a DAG, as you can find many well written instructions by Google. What I would like to talk about are something that help you understand DAG better. Like my previous … Continue reading What is DAG? (part 2)