Using resource pools

The virtual machines in a vSphere cluster share the resources of the ESXi hosts in the cluster. Resource pools are a way to divide the resources of the cluster into different pools. Virtual machines in a resource pool share the resources of their resource pool. This can be useful to always give a group of virtual machines the resources they need or to limit the number of resources for a group of virtual machines.

Each cluster has a root resource pool named Resources. The resource pools you create are children of the Resources root resource pool or other resource pools in the cluster.

Resource pools and virtual machines have settings that will be explained in the following table:

Setting	Description
Shares	A relative importance against sibling resource pools or virtual machines. Shares can have a level (Custom, High, Low, or Normal) or an amount.
Limit	The maximum allowed resources.
Reservation	The minimum available resources.
Expandable reservation (resource...