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Green IP Over WDM Networks With Data Centers

Green IP Over WDM Networks With Data Centers,10.1109/JLT.2011.2148093,IEEE/OSA Journal of Lightwave Technology,Xiaowen Dong,Taisir El-Gorashi,Jaafar M

Green IP Over WDM Networks With Data Centers   (Citations: 2)
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Most of the previous research on data centers power consumption has focused on understanding how to minimize the power consumption inside the data center. It is, however, also important to investigate the power consumption associated with transporting data between data centers and end users. In this paper, we consider three problems. First, through linear pro- gramming (LP) models and through simulations we determine the optimal location of a data center or multiple data centers in an IP over wavelength-division-multiplexing network so as to minimize the network's power consumption. Here, we consider the impact of network topology, traffi cp rofile, upload and download rates, number of data centers and the impact of power minimization on delay. Second, we study how to replicate content that has different popularity to minimize power consumption through the use of an LP model. Here, we consider five classes (but the models are general) of content that have different levels of popularity and consider multiple data centers. The optimization attempts to identify where to store a data object that has a given popularity such that the network's power consumption is minimized. We have also developed a novel routing algorithm, energy-delay op- timal routing, to minimize the power consumption of the network under replication while maintaining QoS. Third, we investigate through LP the problem of whether to locate data centers next to renewable energy or to transmit renewable energy to data centers in a given network topology under different traffic conditions and taking into account the network components' power consump- tion. Given a number of wind Farms whose locations are known together with the electrical power transmission losses, we identify the optimal location of data centers such that the network's power consumption is minimized and consider a network where the nodes that are not connected to wind farms have access to solar power. The results show that by identifying the optimum data center locations, combining the multi-hop bypass heuristic with renewable energy and the replication scheme, power consumption savings of up to 73% can be achieved.
Journal: IEEE/OSA Journal of Lightwave Technology - J LIGHTWAVE TECHNOL , vol. 29, no. 12, pp. 1861-1880, 2011
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    • ...In [12], a model is introduced to optimize the location of data centres in IP over WDM networks to minimize the overall power consumption...
    • ...The MILP model uses the parameters in Table 1 to calculate the energy consumption of the network [12]...

    Niemah I. Osmanet al. Reduction of energy consumption of Video-on-Demand services using cach...

    • ...In this paper, we study the power consumption of IP over WDM networks with data centres [5] by investigating two problems...
    • ...In [5] we show the average traffic demands in different time zones...
    • ...A LP model has been developed in [5] to optimize the locations of data centres in the IP over WDM network...
    • ...The NSFNET network is also considered to identify the optimal location of data centres under the presence of wind farms through the use of the LP model developed in [5]...
    • ...Figure 5 compares the non-renewable power consumption under the optimal data centre locations obtained from the LP model in [5] and simulations under the multi-hop bypass heuristic to the case where random nodes are selected to serve as data centres powered by the nearest wind farm...

    Xiaowen Donget al. Energy-efficient IP over WDM networks with data centres

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