“雙碼”架構(gòu)下的云存儲(chǔ)多節(jié)點(diǎn)修復(fù)協(xié)作編碼
發(fā)布時(shí)間:2018-11-22 11:36
【摘要】:針對(duì)云存儲(chǔ)中現(xiàn)有多節(jié)點(diǎn)失效修復(fù)模型的不足,給出了一種可以對(duì)多個(gè)系統(tǒng)節(jié)點(diǎn)或冗余節(jié)點(diǎn)同時(shí)修復(fù)的多節(jié)點(diǎn)協(xié)作的精確修復(fù)碼,證明了其存在性,并且將此修復(fù)碼與具有健康節(jié)點(diǎn)協(xié)作的MDS雙碼架構(gòu)模型相結(jié)合,以達(dá)到對(duì)多節(jié)點(diǎn)修復(fù)的同時(shí),降低修復(fù)帶寬、修復(fù)鏈路數(shù)和單個(gè)中間節(jié)點(diǎn)需要處理的數(shù)據(jù)量。通過(guò)數(shù)值仿真結(jié)果表明,本模型與修復(fù)方案在以上3個(gè)方面具有較大改進(jìn),尤其削弱了修復(fù)時(shí)中間節(jié)點(diǎn)的負(fù)荷,且隨著云存儲(chǔ)中節(jié)點(diǎn)數(shù)量的增多,本方案的優(yōu)勢(shì)更加明顯。
[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.
【作者單位】: 重慶郵電大學(xué)寬帶接入網(wǎng)絡(luò)研究所;重慶郵電大學(xué)移通學(xué)院計(jì)算機(jī)科學(xué)系;
【基金】:國(guó)家自然科學(xué)基金資助項(xiàng)目(61271259,0872037) 重慶市自然科學(xué)基金資助項(xiàng)目(CTSC2011jj A40006,CSTC2010BB2415) 重慶市教委科學(xué)技術(shù)研究基金資助項(xiàng)目(KJ120501,KJ110530)~~
【分類號(hào)】:TP333
本文編號(hào):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.
【作者單位】: 重慶郵電大學(xué)寬帶接入網(wǎng)絡(luò)研究所;重慶郵電大學(xué)移通學(xué)院計(jì)算機(jī)科學(xué)系;
【基金】:國(guó)家自然科學(xué)基金資助項(xiàng)目(61271259,0872037) 重慶市自然科學(xué)基金資助項(xiàng)目(CTSC2011jj A40006,CSTC2010BB2415) 重慶市教委科學(xué)技術(shù)研究基金資助項(xiàng)目(KJ120501,KJ110530)~~
【分類號(hào)】:TP333
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