If you need to do maintenance on a cluster and you need to take it offline entirely:
right-click the cluster name, select More Actions, and then select Shut Down Cluster.
A computer cluster is essentially a collection of two or more nodes, or computers, that work together in parallel to complete a task. As a result, workloads made up of a lot of distinct, parallelizable jobs may be dispersed throughout the cluster's nodes. These jobs may therefore take advantage of the whole memory and processing capabilities of each machine to improve performance.
A cluster should operate as if it were a single system. It should not be necessary for a user accessing the cluster to be aware of whether the system is a cluster or a single computer. Additionally, a cluster has to be built to reduce latency and avoid communication bottlenecks between nodes.
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