A common misconception about resource pools

In vSphere resource pools are a great way to divide your overall compute resources into multiple independent pools and prioritize resources among different VMs. But before you create and use them you should make sure that you have fully understood how resource pools work, and what effect their settings have. In the vSphere Resource Management Guide there is a long chapter about Managing Resource Pools that describes how to set them up and how they work using some real world examples. And still it looks like this information is not clear enough (or maybe there is just a part missing in the documentation that explains how resource pools do not work), because there are surprisingly many vSphere environments that use them in the following way:

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