DS8000存储容灾技术概述(ppt-66页)课件.ppt
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1、1 1 1 1 1132目录目录42DS8000 硬件图示硬件图示3DS8000 组件组件FramesFrames4DS8000 体系架构体系架构5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逻辑配置磁盘虚拟化6DS8000 逻辑配置层次逻辑配置层次One array site used to construct one RAID Array (8 DDMs) RAID 5, 10, 61 Array per Rank Rank can be CKD or FB1-N ranks in Extent PoolAssociated
2、with Server0 or Server1 Divided into ExtentsVolumes are made in Extent Pool7DS8000 逻辑配置层次(续)逻辑配置层次(续)Volumes or LUNsMade up of extents from one extent poolMin size 0.1 GB or 1 cylinderMax size 2 TB (FB) 56 GB(CKD)Associated with LSS during configurationVolume GroupContains LUNsand host attachments -
3、FB LUN maskingOne host attachment (one port or port group) can be member of only one volume groupOne volume can be member of multiple volume groupsMultiple hosts (even different open systems server types) can be member of the same volume groupHostMultiple server ports can be specified (in one or mor
4、e groups) in one host definitionDS8000 逻辑配置逻辑配置ArrayAn array is created from one array site.Forming an array means defining it for a specific RAID typeRAID 5, 10 ,6In the DS8000 current implementation, one array is defined using one array siteAccording to the DS8000 sparing algorithm, from zero to t
5、wo spares may be taken from the array siteAn array is formed using one array site and while the array could be accessed by each adapter of the device adapter pair, it is managed by one device adapterWhich adapter and which server manages this array are defined later in the configuration pathD1, D2,
6、D3, and so on, stand for the set of data contained on one disk within a stripe on the arrayIf, for example 1 GB of data is written, it is distributed across all the disks of the arrayArray Site, Array 配置示例配置示例DS8000 逻辑配置逻辑配置RankWhen a new rank is defined, its name is chosen by the DS Storage Manager
7、For example: R1, R2, or R3, and so onYou have to add an array to a rankProcess of forming a rank:The array is formatted for either FB (open systems) or CKD (zSeries) data. This determines the size of the set of data contained on one disk within a stripe on the array.The capacity of the array is subd
8、ivided into equal sized partitions, called extents. The extent size depends on the extent type, FB or CKDOne extent is the minimum physical allocation unit when a LUN or CKD volume is created11DS8000 逻辑配置逻辑配置Extent PoollAn extent pool is a logical construct to aggregate the extents from a set of ran
9、ks to form a domain for extent allocation to a logical volumeSame RAID type and the same disk RPM characteristicsSo that the extents in the extent pool have homogeneous characteristicslNo predefined affinity of ranks or arrays to a storage serverThe affinity of the rank (and its associated array) to
10、 a given server is determined at the point it is assigned to an extent poolWhen assigned to extent pools ranks are organized in two rank groups:Rank group 0 is controlled by server 0Rank group 1 is controlled by server 1lOne or more ranks with the same extent type can be assigned to an extent poollO
11、ne rank can be assigned to only one extent pool.There can be as many extent pools as there are ranks.lAt least two extent pools (one per server to balance the activity) of each typeCKD or FBAdditional extent pools may be used to segregate ranks with different DDM types12DS8000 逻辑配置逻辑卷逻辑配置逻辑卷lA logic
12、al volume is composed of a set of extents from one extent pool.lOn a DS8000, up to 65280 volumes can be created13DS8000 逻辑配置逻辑配置LSSlA logical subsystem (LSS) is another logical construct. It groups logical volumes, LUNs, in groups of up to 256 logical volumes.lLSSs also have an affinity to the serve
13、rs. lAll even-numbered LSSs(X00, X02, X04, up to XFE) belong to server 0lAll odd-numbered LSSs(X01, X03, X05, up to XFD) belong to server 1.14DS8000 逻辑配置逻辑配置LSS 示例示例15DS8000 逻辑配置逻辑配置Host AttachmentlMultiple server ports can be specified (in one or more groups) in one host definitionlEach host attach
14、ment can be associated with a volume group to define which LUNsthat HBA is allowed to access. Multiple host attachments can share the same volume group.16DS8000 逻辑配置逻辑配置Volume GrouplMaps LUNsto server ports or port groupsFB LUN maskingLUN masking at VG level, not LUN levellSpecific host attachment c
15、an be in only one volume grouplOptions for shared accessPlace hosts in separate volume groups and shared volumes in multiple volume groupsPlace shared volumes and multiple hosts in single volume groupOne Host port/port group can be member of one volume groupOne Volume can be member of more than one
16、volume groupMore than one host (even different open systems server types) can be member of one volume group17DS8000 逻辑配置总结逻辑配置总结18181818182目录目录1919191919建立存储容灾重要性建立存储容灾重要性无法预知的 IT 硬件设备的损坏、断电、火灾、自然灾害、恐怖袭击等,造成数据丢失或业务的突然中断;系统人员误操作造成意外宕机或关键数据丢失,无法避免;手段频多的黑客攻击、病毒入侵、垃圾邮件、网络与系统的漏洞,造成网络瘫痪、系统崩溃。l一旦发生灾难(洪水、地震
17、、火灾等),或者人为灾难(用户失误、磁盘失效等)导致数据丢失或者业务中断时,能够快速、及时地恢复数据,保证业务的连续运行。l提高系统可用性,增加业务的可持续性,减少关键业务应用程序受故障影响l在灾难和不可预知事件发生后,最快恢复关键业务数据,保障业务运营持续性20DS8000 容灾技术介绍容灾技术介绍 IBM 企业级存储容灾解决方案通过IBM System Storage DS8000 企业级高端磁盘存储系统,结合IBM 特有的数据复制技术Metro Mirror(同步的数据复制)和 Global Mirror (异步的数据复制),在两套或多套DS8000 磁盘存储设备间建立数据复制关系从而实
18、现高可用性,在数据存储方面提高IT 基础架构的整体可用性。方案配合Power 服务器AIX 操作系统的特色软件PowerHA/XD 及IBM 全面的业务连续性计划配套服务,建立完善的灾难备份中心,从而保证关键数据的可恢复性与业务应用的可持续性21远程数据同步复制技术-Metro MirrorPPRC 的同步实现机制1)在生产系统中的应用程序将数据写到生产系统的磁盘。2)生产系统中心的磁盘数据传输到备份中心的磁盘3)当生产数据都写入备份中心存储设备后,备份磁盘将写完操作信息返给生产磁盘4)生产系统收到灾备系统传回的已写信息之后,生产机的磁盘系统通知主机该写操作已完毕。# 现在同步复制技术 PPR
19、C 已经正式改名为Metro Mirror同步数据复制零数据丢失支持最远303公里数据写入后备存储返回写操作完成信息返回数据写入成功信息数据写入存储22远程数据异步复制技术(保证一致性) -Global MirrorPPRC-XD 的异步机制1)在生产系统中的应用程序将数据写到生产系统的磁盘。2)当数据完全写入生产中心存储设备后,I/O完成的信息会返给生产主机,当生产系统收到磁盘系统传回的已写信息之后,生产系统应用继续执行,即可以进行下一步操作。3)备份机磁盘数据复制,备份磁盘复制生产系统数据。生产磁盘会定期把已经改变了的数据传输到备份中心的磁盘。4)当数据已经写入备份中心存储设备后,写完操作
20、信息会返回给生产磁盘,生产中心的磁盘系统认为此次操作完成异地 RPO 最短 3-5 秒,无距离限制,保证数据一致性。数据写入存储返回数据写入成功信息23本地数据复制技术本地数据复制技术 FlashCopy FlashCopy 提供一个“时间点”的拷贝服务功能,从源卷到目标卷快速地复制数据。逻辑拷贝通常可以在数秒时间内完成,然后就释放源卷,进行正常工作。而物理拷贝操作在后台进行当物理拷贝进行过程中,拷贝和被拷贝数据都能被使用24PPRC、flashcopy技术的结合技术的结合A -B做PPRC,B是不能被服务器访问的,为充分利用灾备中心的设备,DS8000 FlashCopy 功能可以对B进行一
21、份或多分快照,用于系统查询、批处理、测试。25DS8000 容灾解决方案介绍容灾解决方案介绍-两地三中心方案两地三中心方案26DS8000 容灾解决方案介绍容灾解决方案介绍 -存储存储HA+异地灾备异地灾备(HA+GM)27272727273目录目录28东四现有存储东四现有存储序号序号型号型号序列号序列号IP地址地址物理位置物理位置1DS8100IBM.2107-75APML110.12.30.119东四6层机房2DS8300IBM.2107-75BYYC110.12.30.120东四6层机房3DS8100IBM.2107-750019110.12.30.84东四6层机房4DS6800IBM.
22、1750-6806062132.77.121.179东四6层机房5DS8300TIBM.2107-75DMLN110.12.70.130金盏4层机房29东四容灾系统东四容灾系统序号系统生产端存储容灾端存储容灾类型1IBS帐务系统DS6_DS8100JZ_DS8300T应用级2IBS收费系统DS6_DS8100JZ_DS8300T应用级3IBS统计库系统DS6_DS8100JZ_DS8300T数据级4综合结算系统DS6_DS8100JZ_DS8300T数据级5ERP系统DS6_DS8100JZ_DS8300T数据级6IBS综合接口机系统DS6_DS8100JZ_DS8300T数据级7IBSOD系
23、统DS6_DS8300JZ_DS8300T应用级8IBS汇集系统DS6_DS8300JZ_DS8300T应用级9IBS计费系统DS6_DS8300JZ_DS8300T应用级10一卡充数据库系统DS6_DS8300JZ_DS8300T数据级11一卡充物理节点系统DS6_DS8300JZ_DS8300T数据级12税控系统DS6_DS8300JZ_DS8300T数据级13综合积分系统DS6_DS8300JZ_DS8300T数据级14IOM系统DS8_DS6800JZ_DS8300T应用级15CSMDS8_SUN9990JZ_SUN9990T应用级30北京联通容灾拓扑图北京联通容灾拓扑图3131313
24、131目录目录432DS8000逻辑配置步骤1.安装激活许可2.配置IO卡,定义IO的类型.3.创建arrays. 配置arrays的raid类型(raid5.raid10,radi6)4.创建 ranks.5.创建 extent pools. 配置extent pool 的server(Server 0 or Server 1), 并指定rank到extent pool.6.创建LUN,定义lun类型 (FB,CDK)7.创建volgrp8.创建主机连接关系33安装许可1.通过DSCLI下的lskey命令,查看许可证状态2.通过applykey命令,安装许可证3.通过lskey验证34配置I
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