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Optimizing Power Consumption in Large Scale Storage Systems   
摘  要:   Data centers are the backend for a large number of ser- vices that we take for granted today. A significant frac- tion of the total cost of ownership of these large-scale storage systems is the cost of keeping hundreds of thou- sands of disks spinning. We present a simple idea that allows the storage system to turn off a large fraction of its disks, without incurring unacceptable performance penalties. Of particular appeal is the fact that our solu- tion is not application-specific, and offers power-savings for a very generic data center model. In this paper, we describe our solution, identify the parameters that deter- mine its cost-benefit tradeoffs, and present a simulator that allows us to explore this parameter space. We also present some initial simulation results that add weight to our claim that our solution represents a new power- saving opportunity for large-scale storage systems.
发  表:   Workshop on Workstation Operating Systems /Workshop on Hot Topics in Operating Systems  2007

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