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Affinity rules can be used to keep virtual machines together. For example, having the virtual machine running the vCenter Server and the virtual machine running the vCenter Server database on the same host reduces the load on the physical network, since all communication between the two servers never leaves the internal host network.
Anti-affinity rules can also be used to separate virtual machines across hosts or groups of hosts. In an environment where multiple PSCs are deployed to provide high availability, separating the PSCs by using anti-affinity rules will ensure that a single host failure does not impact the services provided by the PSCs.
If you are hosting vCenter in the same cluster as other virtual machine workloads, ...
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