DS8000存储容灾技术课件.ppt
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1、2010年5月,DS8000存储容灾技术,2010年5月DS8000存储容灾技术,1,1,1,1,1,东四容灾方案介绍,目录,DS8000存储PPRC介绍,11111DS8000存储介绍13东四容灾方案介绍DS800,DS8000 硬件图示,DS8000 硬件图示,DS8000 组件FramesFrames,DS8000 组件FramesFrames,DS8000 体系架构,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,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,DS8000 逻辑配置层
2、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 with Server0 or Server1 Divided into ExtentsVolumes are made in Extent Pool,DS8000 逻辑配置层次One array site us,DS8000 逻辑配置层次(续),Volumes or LUNsMade up of exten
3、ts 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 -FB LUN maskingOne host attachment (one port or port group) can be member of only one volume groupOne volume can be member of multipl
4、e 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 more groups) in one host definition,DS8000 逻辑配置层次(续),DS8000 逻辑配置Array,An array is created from one array site.Forming an array means de
5、fining 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 two spares may be taken from the array siteAn array is formed using one array site and while the array could be access
6、ed 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, 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 da
7、ta is written, it is distributed across all the disks of the array,DS8000 逻辑配置ArrayAn array is c,Array Site, Array 配置示例,Array Site, Array 配置示例,DS8000 逻辑配置Rank,When a new rank is defined, its name is chosen by the DS Storage ManagerFor example: R1, R2, or R3, and so onYou have to add an array to a ra
8、nkProcess 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 subdivided into equal sized partitions, called extents. The extent size d
9、epends on the extent type, FB or CKDOne extent is the minimum physical allocation unit when a LUN or CKD volume is created,DS8000 逻辑配置RankWhen a new ran,DS8000 逻辑配置Extent Pool,An extent pool is a logical construct to aggregate the extents from a set of ranks to form a domain for extent allocation to
10、 a logical volumeSame RAID type and the same disk RPM characteristicsSo that the extents in the extent pool have homogeneous characteristicsNo predefined affinity of ranks or arrays to a storage serverThe affinity of the rank (and its associated array) to a given server is determined at the point it
11、 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 1One or more ranks with the same extent type can be assigned to an extent poolOne rank can be assigned to only one extent pool
12、.There can be as many extent pools as there are ranks.At 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 types,DS8000 逻辑配置Extent PoolAn exte,DS8000 逻辑配置逻辑卷,A logical volume is composed of a
13、 set of extents from one extent pool.On a DS8000, up to 65280 volumes can be created,DS8000 逻辑配置逻辑卷A logical volum,DS8000 逻辑配置LSS,A logical subsystem (LSS) is another logical construct. It groups logical volumes, LUNs, in groups of up to 256 logical volumes.LSSs also have an affinity to the servers.
14、 All even-numbered LSSs(X00, X02, X04, up to XFE) belong to server 0All odd-numbered LSSs(X01, X03, X05, up to XFD) belong to server 1.,DS8000 逻辑配置LSSA logical subsy,DS8000 逻辑配置LSS 示例,DS8000 逻辑配置LSS 示例,DS8000 逻辑配置Host Attachment,Multiple server ports can be specified (in one or more groups) in one h
15、ost definitionEach host attachment 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.,DS8000 逻辑配置Host AttachmentMul,DS8000 逻辑配置Volume Group,Maps LUNsto server ports or port groupsFB LUN maskingLUN maskin
16、g at VG level, not LUN levelSpecific host attachment can be in only one volume groupOptions 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 v
17、olume groupOne Volume can be member of more than one volume groupMore than one host (even different open systems server types) can be member of one volume group,DS8000 逻辑配置Volume GroupMaps L,DS8000 逻辑配置总结,DS8000 逻辑配置总结,18,18,18,18,18,目录,1818181818DS8000存储容灾方案介绍2目录,19,19,19,19,19,建立存储容灾重要性,无法预知的 IT 硬
18、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。,一旦发生灾难(洪水、地震、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。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,1919191919建立存储容灾重要性无法预知的 IT 硬件,DS8000 容灾技术介绍,IBM 企业级
19、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,DS8000 容灾技术介绍 IBM 企业级存储容,远程数据同步复制技术-M
20、etro Mirror,PPRC 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 PPRC 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,远程数据同步复制技术-Metro MirrorPPRC,远程数据异步复制技术(保证一致性) -Globa
21、l Mirror,PPRC-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,远程数据异步复制技术(保证一致性) PP
22、RC-XD 的异步机,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,本地数据复制技术 FlashCopy Fl,PPRC、flashcopy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进行一份或多分快照,用于系统查询、批处理、测试。,PPRC、flashcopy技术的结合A -B做PPRC,DS800
23、0 容灾解决方案介绍-两地三中心方案,DS8000 容灾解决方案介绍,DS8000 容灾解决方案介绍 -存储HA+异地灾备(HA+GM),DS8000 容灾解决方案介绍,27,27,27,27,27,东四容灾方案介绍,目录,27272727273东四容灾方案介绍目录,东四现有存储,东四现有存储序号型号序列号IP地址物理位置1DS8100IB,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,北京联通容灾拓扑图,北京联通容灾拓扑图,31,31,31,31,31,目录,DS8000存储PPRC介绍,3131313131目录4DS8000存储PPRC介绍,DS8000逻辑配
24、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,DS8000逻辑配置步骤1.安装激活许可,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,安
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