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Microsoft SQL Server

Manual failover in a SQL Server cluster

In this blog post, I’ll demonstrate how to find the currently active node in a SQL Server cluster, and how to do a manual failover to another node.

Note that a failover will result in a short down time for your SQL Server environment. This is because a recovery (rollback and roll forward of transactions) will be performed on the new active node in the SQL Server cluster. In an environment with long running transactions, the time for the recovery may be substantial (how to check the latest recovery time). So don’t do failover in a production environment unless absolutely necessary. Preferably, use a cluster lab environment to test things out first.


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