Abstract: Upon receiving a request to improve one or more conditions of a datacenter network, a fault management system may analyze information of the datacenter network including communication patterns among services provided in the network. The fault management system determines one or more logical machines associated with one or more services to be moved from one or more devices to one or more other devices of the network. The fault management system may select these one or more logical machines for migration based on a cost function including factors for fault tolerance, bandwidth usage, number of moves and/or response time latency. The fault management system may improve the fault tolerance of the network without significantly affecting the bandwidth usage of the network.