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VMware vCenter Cookbook by Konstantin Kuminsky

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Balancing loads between hosts

Distributed Resource Scheduler (DRS) is a feature designed to optimize VM placement between hosts in a cluster. It compares cluster resource utilization to the current demand. Based on that, it generates recommendations on VM placement. If configured to do so, it can perform VM migrations automatically according to these recommendations.

For example, a cluster on the left side of the diagram is not balanced. After applying DRS recommendations, host resources are utilized more efficiently.

Balancing loads between hosts

Getting ready

The following requirements must be met before hosts can be joined to the DRS cluster:

  • There is a shared storage between ...

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