How many vManage NMS nodes per domain are recommended for scalability and redundancy?
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Correct answer: three or more in a cluster.
Why this is the answer
Cisco recommends a minimum of three vManage NMS nodes in a cluster for scalability and redundancy. This configuration ensures high availability and fault tolerance. If one vManage node fails, the other two can maintain the cluster's quorum and continue operations without interruption. A single vManage instance would be a single point of failure, and two instances or two clusters would not provide the necessary quorum for robust redundancy in a distributed system, as a two-node cluster cannot maintain quorum if one node fails.
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