| With the advent of the era of large data,various fields of research data is exploding growth,which led to the data storage scale and cost more and more high.The energy consumption of the storage system is getting more and more attention of researchers.In recent years,research on disk storage system has proposed a lot of energy-saving methods,including disk scheduling strategy research and disk architecture exploration.However,in most cases,these works only presented a theoretical model rather than applied to practical application scenarios where there will be a variety of restrictions which could influence the effect of the energy efficient model.So it is inevitable to design a new energy efficient storage system for astronomical observation data on Antarctic Dome A.Through the research of the energy saving storage system of the disk,disk energy-saving technologies mainly include: disk power management,workload division and data prefetching technology,disk grouping technology,data migration technology and RAID storage technology.Restricted by Antarctic environmental conditions,while strictly limited by power supply and temporal and spatial characteristics of astronomical data access,a novel energy efficient storage system called MCS-B was proposed in this paper,which is customized for the Antarctic Schmidt Telescopes(AST3)on Antarctic.By combining the multi-level caching strategy with a block replacement strategy,MCS-B takes the logical block(LB)as a basic processing unit to store correlated files via a temporal and spatial pattern.The adoption of MCS-B,with its novel prefetching and caching strategy,leads to prolonged disk idle time intervals,thus those disks have a greater chance to stay idle long enough to be powered down to save energy.Evaluation results show that MCS-B outperforms the existing traditional energy efficient schemes in energy consumption by 34.24%-42.39%,and the average response time for requests(QoS)is reduced by 71.36%-77.14%. |
PDF Full Text Request