1.1.6 Operation with a cluster system
By using a cluster configuration, you can create a highly reliable system that continues to operate even in the event of a system failure. As a result, the programs in Performance Management can continue operation and monitoring 24 hours a day.
The following figure shows an example of operation when a problem occurs on the monitored host in a cluster system.
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![[Figure]](GRAPHICS/ZUQ01001.GIF)
Set up two environments with the same configuration, and define the environment for normal operation as an executing node and the other for failure operation as a standby node.
For more details about running the programs in Performance Management on a cluster system, see Part 2, 3. Operating PFM - Agent for Microsoft SQL Server in a Cluster System.