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Module 2: Concepts of Server Clusters

Module 2: Concepts of Server Clusters. Overview. Introduction to Server Clusters Key Concepts of a Server Cluster Choosing a Server Cluster Configuration Applications and Services on Server Clusters. Introduction to Server Clusters. Clustering Techniques. Shared Everything Model

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Module 2: Concepts of Server Clusters

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  1. Module 2: Concepts of Server Clusters

  2. Overview • Introduction to Server Clusters • Key Concepts of a Server Cluster • Choosing a Server Cluster Configuration • Applications and Services on Server Clusters

  3. Introduction to Server Clusters

  4. Clustering Techniques • Shared Everything Model • Mirrored Servers • Shared Nothing Model

  5. Availability and Scalability • Availability • Cluster Service Improves Availability of Applications and Services • Scalability • Cluster Service Improves Scalability by Adding More Computers to the Cluster

  6. Multimedia: Microsoft Windows 2000 Cluster Service

  7. Server Cluster Node A A Group of Resources Private Network Client File Share Quorum Virtual Server Disk 1 Disk 1 Print Share Node B Public Network Key Concepts of a Server Cluster

  8. Node A Disk 1 Quorum Disk 2 Node B Disk 4 Disk 3 Cluster Disks

  9. Quorum Resource • Data Storage • Arbitration • Quorum Ownership • Updates for Nodes Coming Online

  10. Cluster Communications • Private Network • Public Network • Mixed Network

  11. Logical Disk Groups and Resources Server Cluster \\Cluster1 10.0.0.3 Logical Disk Node A Group 1 Disk 1 \\Server1 10.0.0.4 File Share Printer Share Disk 2 Node B Group 2 Disk 3 \\Server2 10.0.0.6 Application Group 3

  12. FS-1 File Share Recommended Vertical Dependency Not Recommended Forking Dependency FS-1 File Share NN-1 Network Name NN-1 Network Name IP-1 IP Address PD-1 Physical Disk IP-1 IP Address PD-1 Physical Disk Resource Dependencies

  13. Virtual Servers • Client Access to Virtual Servers • Virtual Server Environment • Virtual Server Naming • Named Pipe Remapping • Registry Replication

  14. WINS \\VirtualServer = 10.0.0.25 Node A Group 1 Active Directory Share = \\VirtualServer\Share or Share = \\VirtualServer.mwtraders.msft Disk 1 Quorum Disk 1 \\VirtualServer \\VirtualServer.nwtraders.msft \\10.0.0.25 Node B DNS \\VirtualServer.nwtraders.msft = 10.0.0.25 Virtual Server Name Resolution

  15. Failover Failback Group 1 Node A Node A X Disk 1 Quorum Quorum Disk 1 Disk 1 Group 1 Node B Node B Disk 1 Failover and Failback

  16. Demonstration: Cluster Concepts

  17. Choosing a Server Cluster Configuration Virtual Server Failover Capability Performance Considerations Cluster Configuration No Cluster Needed Single Node Virtual Server Active/Passive Active/Active

  18. Group 1 Node A manages virtualserver \\ACCOUNTING. Node B is configured as ahot spare and will takeownership of \\accounting if Node A goes offline. Cluster Service Disk 1 \\ACCOUNTING Quorum Node A Node B Disk 1 Active/Passive Configuration

  19. Cluster Service Group 1 Capacity to fail over Group 1 Group 2 Disk 1 Disk 2 Capacity to fail over Group 2 \\ENGINEERING \\ACCOUNTING Quorum Node A Node B Disk 1 Disk 2 Active/Active Configuration

  20. Group 1 Capacity to fail over \\engineering Disk 1 \\ENGINEERING Node A Node B Quorum Disk 1 Node A providing DNS outside the cluster Node B providing File/Print outside the cluster Hybrid Configuration

  21. Cluster Service \\ENGINEERING Clients can access any virtual server in the cluster. Group 1 Disk 1 \\ACCOUNTING Group 2 Disk 2 Not Shared Quorum Node A Disk 1 Disk 2 Single Node Virtual Server

  22. Applications and Services on Server Clusters • Applications • Services • File and Print Shares • Identifying Performance Limitations

  23. Applications • Cluster-Aware Applications • Cluster-Unaware Applications

  24. Services • DFS • DHCP • WINS

  25. File and Print Shares Client

  26. Group 1 Exchange 2000 Node A Quorum Disk 1 Group 2 Node B File / Print Identifying Performance Limitations

  27. Review • Introduction to Server Clusters • Key Concepts of a Server Cluster • Choosing a Server Cluster Configuration • Applications and Services on Server Clusters

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