“双码”架构下的云存储多节点修复协作编码
发布时间：2018-11-22 11:36
【摘要】：针对云存储中现有多节点失效修复模型的不足,给出了一种可以对多个系统节点或冗余节点同时修复的多节点协作的精确修复码,证明了其存在性,并且将此修复码与具有健康节点协作的MDS双码架构模型相结合,以达到对多节点修复的同时,降低修复带宽、修复链路数和单个中间节点需要处理的数据量。通过数值仿真结果表明,本模型与修复方案在以上3个方面具有较大改进,尤其削弱了修复时中间节点的负荷,且随着云存储中节点数量的增多,本方案的优势更加明显。
[Abstract]:In view of the shortcomings of the existing multi-node failure repair model in cloud storage, an accurate repair code is proposed, which can be used to repair multiple system nodes or redundant nodes simultaneously, and the existence of the code is proved. The repair code is combined with the MDS dual-code architecture model with healthy node cooperation to reduce the repair bandwidth, repair link number and the amount of data needed to be processed by a single intermediate node while repairing the multi-node. The numerical simulation results show that the model and the repair scheme are improved greatly in the above three aspects, especially the load of the intermediate nodes in the repair process is weakened, and with the increase of the number of nodes in cloud storage, the advantages of this scheme are more obvious.
【作者单位】： 重庆邮电大学宽带接入网络研究所;重庆邮电大学移通学院计算机科学系;
【基金】：国家自然科学基金资助项目(61271259,0872037) 重庆市自然科学基金资助项目(CTSC2011jj A40006,CSTC2010BB2415) 重庆市教委科学技术研究基金资助项目(KJ120501,KJ110530)~~
【分类号】：TP333
本文编号：2349245
[Abstract]:In view of the shortcomings of the existing multi-node failure repair model in cloud storage, an accurate repair code is proposed, which can be used to repair multiple system nodes or redundant nodes simultaneously, and the existence of the code is proved. The repair code is combined with the MDS dual-code architecture model with healthy node cooperation to reduce the repair bandwidth, repair link number and the amount of data needed to be processed by a single intermediate node while repairing the multi-node. The numerical simulation results show that the model and the repair scheme are improved greatly in the above three aspects, especially the load of the intermediate nodes in the repair process is weakened, and with the increase of the number of nodes in cloud storage, the advantages of this scheme are more obvious.
【作者单位】： 重庆邮电大学宽带接入网络研究所;重庆邮电大学移通学院计算机科学系;
【基金】：国家自然科学基金资助项目(61271259,0872037) 重庆市自然科学基金资助项目(CTSC2011jj A40006,CSTC2010BB2415) 重庆市教委科学技术研究基金资助项目(KJ120501,KJ110530)~~
【分类号】：TP333
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