2. ©HCCS & IBM® 2008 Stephen Linkin1 Mainframe Hardware Systems And High Availability Stephen S. Linkin Houston Community College © HCCS and IBM 2008

3. ©HCCS & IBM® 2008 Stephen Linkin2 Introduction To Mainframe Hardware Systems Terminology Or JARGON Fig 2-1

4. ©HCCS & IBM® 2008 Stephen Linkin3 Early System Design  What Is In The Box Processors Memory Control Circuits Interfaces  S/360 system

5. ©HCCS & IBM® 2008 Stephen Linkin4 Early System Design  Channel Addresses Hex Parallel Channels

6. ©HCCS & IBM® 2008 Stephen Linkin5 Current Design  I/O Connectivity  System Control And Partitioning  Characteristics Of LPARS  Consolidation Of Mainframes

7. ©HCCS & IBM® 2008 Stephen Linkin6 Current Design  I/O Connectivity

8. ©HCCS & IBM® 2008 Stephen Linkin7 Current Design  I/O Connectivity

9. ©HCCS & IBM® 2008 Stephen Linkin8 Current Design  System Control And Partitioning PR/SM™

10. ©HCCS & IBM® 2008 Stephen Linkin9 Current Design  System Control And Partitioning PR/SM™  LPARS

11. ©HCCS & IBM® 2008 Stephen Linkin10 Current Design  Characteristics Of LPARS Equivalent To Separate Mainframes No Need To Run z/OS, In Each LPAR  z/OS In LPAR1  Test Version Of z/OS In LPAR2  Linux For S/390 In LPAR3

12. ©HCCS & IBM® 2008 Stephen Linkin11 Current Design  Consolidation Of Mainframes Fewer Machines More Power Software Expense

13. ©HCCS & IBM® 2008 Stephen Linkin12 Processing Units  Central Processor (CP)  System Assistance Processor (SAP)  Integrated Facility For Linux (IFL)  zAAP

14. ©HCCS & IBM® 2008 Stephen Linkin13 Processing Units  zIIP  Integrated Coupling Facility (ICF)  Spare  Capacity on Demand

15. ©HCCS & IBM® 2008 Stephen Linkin14 Multiprocessors  Possible To Purchase With A Single CP  Minimum Configuration Is Two Processors  Owned By System Or LPAR Channels I/O Devices Interrupts Memory

16. ©HCCS & IBM® 2008 Stephen Linkin15 Multiprocessors  Memory Private Area Of Memory (8 KB)  PSA

17. ©HCCS & IBM® 2008 Stephen Linkin16 Disk Devices  IBM 3390 Disk Drives  IBM 2105 Enterprise Storage Server® Commodity SCSI Units RAID 5

18. ©HCCS & IBM® 2008 Stephen Linkin17 Clustering  Basic Shared DASD  CTC Rings  Parallel Sysplex

19. ©HCCS & IBM® 2008 Stephen Linkin18 Clustering  Basic Shared DASD

20. ©HCCS & IBM® 2008 Stephen Linkin19 Clustering  CTC Rings Usage And Locking Queue Information Security Controls

21. ©HCCS & IBM® 2008 Stephen Linkin20 Clustering  Parallel Sysplex

22. ©HCCS & IBM® 2008 Stephen Linkin21 What Is An IBM Parallel Sysplex?

23. ©HCCS & IBM® 2008 Stephen Linkin22 What Is An IBM Parallel Sysplex?  Coupling Facility  Clustering Technologies For The Mainframe Shared Data Clustering Non-disruptive Maintenance

24. ©HCCS & IBM® 2008 Stephen Linkin23 What Is An IBM Parallel Sysplex?  What Is A Coupling Facility?  Hardware & Software 1. Locking Information 2. Cache Information 3. Data List Information

25. ©HCCS & IBM® 2008 Stephen Linkin24 What Is An IBM Parallel Sysplex?  Clustering Technologies For The Mainframe Shared Data Clustering Non-disruptive Maintenance

26. ©HCCS & IBM® 2008 Stephen Linkin25 Typical Mainframe Systems  Very Small Systems

27. ©HCCS & IBM® 2008 Stephen Linkin26 Typical Mainframe Systems  Very Small Systems  Medium Single Systems

28. ©HCCS & IBM® 2008 Stephen Linkin27 Typical Mainframe Systems  Very Small Systems  Medium Single Systems  Larger Systems

29. ©HCCS & IBM® 2008 Stephen Linkin28 Continuous Availability Of Mainframes

30. ©HCCS & IBM® 2008 Stephen Linkin29 Continuous Availability Of Mainframes  No Single Points Of Failure

31. ©HCCS & IBM® 2008 Stephen Linkin30 Continuous Availability Of Mainframes  No Single Points Of Failure  Capacity And Scaling

32. ©HCCS & IBM® 2008 Stephen Linkin31 Continuous Availability Of Mainframes  No Single Points Of Failure  Capacity And Scaling  Dynamic Workload Balancing Workload Distribution Generic Resource Management

33. ©HCCS & IBM® 2008 Stephen Linkin32 Continuous Availability Of Mainframes  No Single Points Of Failure  Capacity And Scaling  Dynamic Workload Balancing Workload Distribution Generic Resource Management

34. ©HCCS & IBM® 2008 Stephen Linkin33 Continuous Availability Of Mainframes  Ease Of Use Workload Management (WLM) Component

35. ©HCCS & IBM® 2008 Stephen Linkin34 Continuous Availability Of Mainframes  Ease Of Use Workload Management (WLM) Component Sysplex Failure Manager (SFM)

36. ©HCCS & IBM® 2008 Stephen Linkin35 Continuous Availability Of Mainframes  Ease Of Use Workload Management (WLM) Component Sysplex Failure Manager (SFM) Automatic Restart Manager (ARM) Cloning And Symbolics

37. ©HCCS & IBM® 2008 Stephen Linkin36 Continuous Availability Of Mainframes  Ease Of Use Workload Management (WLM) Component Sysplex Failure Manager (SFM) Automatic Restart Manager (ARM) Cloning And Symbolics Z/series Resource Sharing

38. ©HCCS & IBM® 2008 Stephen Linkin37 Continuous Availability Of Mainframes  Single System Image Single Point Of Control Persistent Single System Image Across Failures

39. ©HCCS & IBM® 2008 Stephen Linkin38 Continuous Availability Of Mainframes  Compatible Change And Non- disruptive Growth  Application Compatibility

40. ©HCCS & IBM® 2008 Stephen Linkin39 Continuous Availability Of Mainframes  Compatible Change And Non- disruptive Growth  Application Compatibility  Disaster Recovery

41. ©HCCS & IBM® 2008 Stephen Linkin40 Summary  Read The Redbook