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DS8000存储容灾技术
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DS8000存储介绍
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东四容灾方案介绍
DS8000存储容灾方案介绍
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目录
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DS8000存储PPRC介绍
DS8000硬件图示
DS8000组件-FramesFrames
DS8000体系架构
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
DS8000逻辑配置层次
OnearraysiteusedtoconstructoneRAIDArray(8DDMs)
RAID5,10,6
1ArrayperRank
RankcanbeCKDorFB1-NranksinExtentPool
AssociatedwithServer0or Server1
DividedintoExtents
VolumesaremadeinExtentPool
DS8000逻辑配置层次(续)
VolumesorLUNs
Madeupofextentsfromoneextentpool
Maxsize2TB(FB)56GB(CKD)
AssociatedwithLSSduringconfiguration
VolumeGroup
ContainsLUNsandhostattachments--FBLUNmasking
Onehostattachment(oneportorportgroup)canbememberofonlyonevolumegroup
Onevolumecanbememberofmultiplevolumegroups
Multiplehosts(evendifferentopensystemsservertypes)canbememberofthesamevolumegroup
Host
Multipleserverportscanbespecified(inoneormoregroups)inonehostdefinition
DS8000逻辑配置-Array
Anarrayiscreatedfromonearraysite.
ForminganarraymeansdefiningitforaspecificRAIDtype
RAID5,10,6
IntheDS8000currentimplementation,onearrayisdefinedusingonearraysite
AccordingtotheDS8000sparingalgorithm,fromzerototwosparesmaybetakenfromthearraysite
Anarrayisformedusingonearraysiteandwhilethearraycouldbeaccessedbyeachadapterofthedeviceadapterpair,itismanagedbyonedeviceadapter
Whichadapterandwhichservermanagesthisarrayaredefinedlaterintheconfigurationpath
D1,D2,D3,andsoon,standforthesetofdatacontainedononediskwithinastripeonthearray
If,forexample1GBofdataiswritten,itisdistributedacrossallthedisksofthearray
ArraySite,Array配置示例
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