VMware Network I/O Control: Architecture, Performance and Best Practices
Network convergence using 10GbE technology provides enormous opportunities for IT administrators and architects to simplify the physical network infrastructure while improving performance. Administrators and architects need a simple and reliable way to enable prioritization of critical traffic over the physical network if and when contention for those resources occurs. The Network I/O Control (NetIOC) feature available in VMware vSphere 4.1 ("vSphere") addresses these challenges by introducing a software approach to partitioning physical network bandwidth among the different types of network traffic flows. It does so by providing appropriate Quality of Service (QoS) policies enforcing traffic isolation, predictability and prioritization, therefore helping IT organizations overcome the contention resulting from consolidation.