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data replicationand recoverywith dell e m c snap view2.0and（replicationand data recoverywith戴尔e m c snap已2.0 and）.doc

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Data Replication and Recovery with Dell/EMC SnapView 2.0 and MirrorView Dell White Paper By Richard Hou, Steve Feibus, Patty Young Contents Executive Summary 3 Introduction 4 SnapView 2.0 8 Snapshot 8 Clones 11 MirrorView 15 Resource Limitation and Dependency 18 Selecting the Right Solution 19 Conclusions 22 Contacts 22 Appendix A: Reference Documents 23 Figures Figure 1: Local Storage Environment 4 Figure 2: Revised SAN diagram for Disaster Recovery 5 Figure 3: Snapshot Basic Diagram 9 Figure 4: Source LUN, Session, and Snapshot Relationship 10 Figure 5: Snapshot for File-Level Recovery 11 Figure 6: Clone Creation and Access 12 Figure 7: Synchronization and Reverse Synchronization 13 Figure 8: Central Mirroring for Disaster Recovery 15 Figure 9: Using MirrorView for Data Replication 17 Figure 10: Decision Tool for Snapshot, Clone, and Mirror 20 Tables Table 1: Resource Limitations for Snapshot, Clone, and Mirror 18 Section 1 Executive Summary This paper provides details on the Dell?/EMC? SnapView? 2.0 and MirrorView? products: their functionality and associated terminologies. The focus is on operational characteristics. This paper explains what SnapView snapshot, SnapView clone and MirrorView are, how they work, and the benefits they can bring to Dell/EMC Storage Area Network (SAN) environments. This paper also explains the differences between these technologies and how they can be used in a disaster recovery environment to help achieve high availability. Finally, this paper details the additional value in using SnapView and MirrorView to reduce a backup window and remove the processing overhead for data backup from an application server. Section 2 Introduction In this paper, we use the example of the Acme Company, which has a typical datacenter environment as shown in Figure 1. In this environment, it has a local datacenter with a Dell/EMC SAN for consolidated, redundant, highly-available storage, and heterogeneous servers sharing the storage