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Quality of Service (QoS) is essential to datacenters, which requires effective schemes to manage the flows among numerous servers. However, existing management techniques mainly focus on the QoS issues over Internet. This paper presents a Dynamic Feedback Control flow management model for datacenters, called DFC, to achieve performance improvement and fault-tolerance. Based on the new model, mechanisms derived from feedback control are designed and evaluated. By observing system status of eachdoi:10.1109/gcc.2010.31 dblp:conf/gcc/YangLQXL10 fatcat:7wry6yodrvhmdbmc3yf2fkvag4