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1、第3期張冰等：多路恢復(fù)數(shù)據(jù)流并行傳輸與控制方法·57·多路恢復(fù)數(shù)據(jù)流并行傳輸與控制方法張冰1，盧正添2，李濤2（1.國(guó)家計(jì)算機(jī)網(wǎng)絡(luò)應(yīng)急技術(shù)處理協(xié)調(diào)中心，北京100029；2.四川大學(xué)計(jì)算機(jī)學(xué)院，四川成都610065）摘要：為有效縮短災(zāi)難恢復(fù)時(shí)間，提出了一種多路恢復(fù)數(shù)據(jù)流并行傳輸與控制方法（MRPTC）。首先，待恢復(fù)服務(wù)器與多個(gè)備用服務(wù)器建立連接，將當(dāng)前破損數(shù)據(jù)與原始的完好數(shù)據(jù)（備份數(shù)據(jù)）做差異比較，獲得兩者的差異數(shù)據(jù)，然后從各備用服務(wù)器處動(dòng)態(tài)并行下載差異數(shù)據(jù)的不同部分，再在本地進(jìn)行拼合，獲得完整的數(shù)據(jù)，從而實(shí)現(xiàn)數(shù)據(jù)的快速恢復(fù)。該方法具有多點(diǎn)協(xié)同差異恢復(fù)、恢復(fù)速度快、帶寬利用率高、傳輸網(wǎng)絡(luò)
2、要求低等優(yōu)點(diǎn)。理論分析和實(shí)驗(yàn)結(jié)果表明，該方法是快速災(zāi)難恢復(fù)的一種有效的新途徑。關(guān)鍵詞：災(zāi)難恢復(fù)；多源恢復(fù)；差異恢復(fù)；并行傳輸中圖分類(lèi)號(hào)：TP309.3文獻(xiàn)標(biāo)識(shí)碼：A文章編號(hào)：1000-436X(2009)03-0054-05Multi-channelrecoverydataflowparalleltransmissionandcontrolmethodZHANGBing1,LUZheng-tian2,LITao2(1.NationalComputerNetworkEmergencyResponseTechnicalTeam/CoordinationCenterofChina,Beijin
3、g100029,China;2.ComputerSchool,SichuanUniversity,Chengdu610065,China)Abstract:Inordertoshortenthetimefordisasterrecovery,amulti-channelrecoverydataflowparalleltransmissionandcontrol(MRPTC)methodwaspresented.First,theconnectionsbetweentheservertoberecoveredandtheseveralstandbyserverswereestablishe
4、d,thedifferencecomparisonbetweenthecurrentdamageddataandtheoriginalintactdata(thebackupdata)wascompleted,thedifferenceswereobtained.Thenthedifferentpartsofthedifferencesweredynamicallydownloadedfromthestandbyserversintheparallelmode,thesepartswereunitedlocally,thewholedatawasfinallyobtained,andth
5、efastdisasterrecoveryofthedatawasachieved.Thetheoreticalanalysisandtheexperimentresultsshowthattheproposedmethodhasthefeaturesofmulti-pointcollaborativedifferencerecovery,highrecoveryspeed,fullbandwidthutilization,andlownetworkrequirement.Therefore,thismethodisanewgoodapproachoffastdisasterrecove
6、ry.收稿日期：2008-11-12；修回日期：2009-01-05基金項(xiàng)目：國(guó)家重點(diǎn)基礎(chǔ)研究發(fā)展計(jì)劃（“973”計(jì)劃）基金資助項(xiàng)目（2007CB311100）；國(guó)家高技術(shù)發(fā)展計(jì)劃（“863”計(jì)劃）基金資助項(xiàng)目（2006AA01Z435）；國(guó)家自然科學(xué)基金資助項(xiàng)目（60873246）；國(guó)家信息安全計(jì)劃（“242”計(jì)劃）基金資助項(xiàng)目（2005A04）FoundationItems:TheNationalBasicResearchProgramofChina(973Program)(2007CB311100);TheNationalHighTechnologyResearchandDevel
7、opmentProgramofChina(863Program)(2006AA01Z435);TheNationalNaturalScienceFoundationofChina(60873246);TheNationalInformationSecurityProgramofChina(242Program)(2005A04)Keywords:disasterrecovery;multi-sourcerecovery;differ
