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A VMware administrator can choose how much of each physical resource to allocate to each new VM and allocate portions of these logical resource groups to various users, add and remove compute resources, or reorganize pools as required.
The VMware resource pool manages and optimizes these physical resources for virtual systems within a VMware Distributed Resource Scheduler (DRS) cluster. With memory overcommit, more resources can be allocated to VMs than are physically available. Changes that occur in one resource pool will not affect other, unrelated resource pools VMware administrators create.
Administrators use VMware vCenter, third-party tools, or command-line interfaces (CLI) like esxtop to monitor resource pools, gathering detailed CPU and memory statistics. End users should not make changes to the resource pools.
Citrix and Microsoft also create resource pools in their respective virtualization environments.