An Introduction to Performance Tuning Written by Mattias Sundling, Evangelist, Dell Introduction VM performance is ultimately determined by the underlying physical hardware and the hypervisor that serves as the foundation for your virtual infrastructure. The construction of this foundation has become simpler over the years, but there are still several areas that should be fine-tuned in order to maximize the VM performance in your environment. While some of the content of this writing will be generic toward any hypervisor, this d ocument focuses on VMware vSphere 5.0. This is an introduction to performance tuning and is not intended to cover everything in detail. Most topics have links to sites that contains deep-dive information if you wish to learn more.