Reliability Analysis of Data Center Network

Terminal and broadcast reliability analysis of direct 2-D symmetric torus network

“…The time-independent analysis gives an overview how the network reacts in the case of faulty nodes with various confidence intervals of node reliabilities, whereas the time-dependent analysis describes how the network responds when the nodes are failing with a constant rate without recovery. Reliability block diagram method (RBD) method [26] is used to evaluate the aforementioned aspects of reliability.…”

“…In [26], we have analysed and compared the time-independent reliability for direct torus topology (using XYRA) and Benes network of size 8 × 8 and 16 × 16 . The comparison and analysis of time-dependent reliability for Benes and torus network (using XYRA) is presented in [27]. So, we observed that torus network has high reliability than Benes network.…”

“…The reliability of these networks is analysed by generating even individual units of them. The reliability is computed by substituting the homogeneous units back in the order of series-parallel (after obtaining reliability for them) as a single network [26]. An example of the RBD structure between a given source-destination of such a network is represented in Fig.…”

“…The time-dependent terminal reliability is defined as the probability of finding at least single non-faulty path between a specific source-destination pair considering a constant node failure rate [9]. This analysis is carried out with the node failure rate of 10 −6 per hour [7,9,22,26]. When in a network all the nodes have a constant failure rate, then the reliability of single node is assumed to follow an exponential distribution e − t (4)…”

Performance analysis of torus optical interconnect with data center traffic

“…Efficient topologies and routing algorithms [9–14] are required to manage the increase in traffic within the optical interconnects of DC networks. A non‐blocking Spanke‐type scalable network with distributed control was proposed in [8].…”