Resource pools

[gmaze]

Quick easy question. I have all my hosts in a cluster. All my guests at the root. If I create resource pools for certain groups of guests am I taking away resources from the root even if the resource pool is not using all the allocated resources?

[RParker · Accepted solution]

No a resource pools are mainly for management/security access and they LIMIT a group of VM's to a certain amount of resource, but they don't take anything from the pool, only VM's do that while they are running.

If you reserve a certain amount of memory for a pool, and all the VM's in that pool are running, they will be guaranteed to get that memory, but again this ONLY applies to VM's that are powered on. If your VM's are not on, they won't take any resource.

[gmaze]

Thanks for the quick reply.

[joshuatownsend]

See my post here (http://vmtoday.com/2012/03/vmware-vsphere-resource-pools-resource-allocation-revisited/) for an explanation of how to best use VMware Resource Pools, common mistakes in using Resource Pools, and how incorrectly using Resource Pools can negatively affect performance.