SQL Clustering

If you want a SQL Server instance to be clustered for high availability, you are essentially asking that this SQL Server instance (and the database) be completely resilient to a server failure and completely available to the application without the end user ever even noticing that there was a failure (or at least with minimal interruption). Microsoft provides this capability through the SQL Clustering option. SQL Clustering is built on top of MSCS for its underlying detection of a failed server and for its availability of the databases on the shared disk (which is controlled by MSCS). SQL Server is said to be a “cluster-aware/enabled” technology.

A SQL Server instance that is clustered can be created by actually creating a virtual ...

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