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1、2010年5月DS8000存储容灾技术11111DS8000存储介绍13东四容灾方案介绍DS8000存储容灾方案介绍2目录4DS8000存储PPRC介绍DS8000硬件图示2DS8000组件－FramesFrames3DS8000体系架构4将物理磁盘组成逻辑卷，提供给服务器使用，使得这些逻辑卷看起来像是物理磁盘一样DS8000逻辑配置－磁盘虚拟化5DS8000逻辑配置层次OnearraysiteusedtoconstructoneRAIDArray(8DDMs)RAID5,10,61ArrayperRankRankcanbeCKDorFB1-
2、NranksinExtentPoolAssociatedwithServer0orServer1DividedintoExtentsVolumesaremadeinExtentPool6DS8000逻辑配置层次（续）VolumesorLUNsMadeupofextentsfromoneextentpoolMinsize0.1GBor1cylinderMaxsize2TB(FB)56GB(CKD)AssociatedwithLSSduringconfigurationVolumeGroupContainsLUNsandhostattachmen
3、ts--FBLUNmaskingOnehostattachment(oneportorportgroup)canbememberofonlyonevolumegroupOnevolumecanbememberofmultiplevolumegroupsMultiplehosts(evendifferentopensystemsservertypes)canbememberofthesamevolumegroupHostMultipleserverportscanbespecified(inoneormoregroups)inonehostde
4、finition7DS8000逻辑配置－ArrayAnarrayiscreatedfromonearraysite.ForminganarraymeansdefiningitforaspecificRAIDtypeRAID5,10,6IntheDS8000currentimplementation,onearrayisdefinedusingonearraysiteAccordingtotheDS8000sparingalgorithm,fromzerototwosparesmaybetakenfromthearraysiteAnarrayi
5、sformedusingonearraysiteandwhilethearraycouldbeaccessedbyeachadapterofthedeviceadapterpair,itismanagedbyonedeviceadapterWhichadapterandwhichservermanagesthisarrayaredefinedlaterintheconfigurationpathD1,D2,D3,andsoon,standforthesetofdatacontainedononediskwithinastripeonthear
6、rayIf,forexample1GBofdataiswritten,itisdistributedacrossallthedisksofthearrayArraySite,Array配置示例DS8000逻辑配置－RankWhenanewrankisdefined,itsnameischosenbytheDSStorageManagerForexample:R1,R2,orR3,andsoonYouhavetoaddanarraytoarankProcessofformingarank:Thearrayisformattedforeither
7、FB(opensystems)orCKD(zSeries)data.Thisdeterminesthesizeofthesetofdatacontainedononediskwithinastripeonthearray.Thecapacityofthearrayissubdividedintoequalsizedpartitions,calledextents.Theextentsizedependsontheextenttype,FBorCKDOneextentistheminimumphysicalallocationunitwhena
8、LUNorCKDvolumeiscreatedDS8000逻辑配置－ExtentPoolAnextentpoolisalogicalconstructtoaggre
