CSAR - Complex Systems Availability and Recovery

 LENGTH OF COURSE:
5 Days

DESCRIPTION: This course is designed to allow the operations personnel in a large and complex OS/390 IBM 9672 environment to better understand and react to error messages and control the system operation more effectively. The course will concentrate on common, practical problems and techniques used to resolve these problems.

PREREQUISITES: Some experience with OS/390 terminology and operations.

INSTRUCTION TECHNIQUES: A combination of Lecture, Exercises and Labs (when/where available).

AUDIENCE

Computer Operators, System Support Staff, Advanced Help Desk Personnel, Systems Programmers and Managers.
KEY HIGHLIGHTS:
  • Complex Systems Availability and Recovery Introduction & Terminology
  • I/O Implementation
    • S/390 I/O Terminology
    • Device Number and Unit Control Block
    • UCB and Subchannel
    • CHPID Configuration & Organization
    • Unit Address
    • Path (Non-ESCON)
    • S/390 Device Numbering (Non-ESCON)
    • ESCON Concepts
    • System-Related I/O Work Flow
    • S/390 I/O Instructions
    • MVS Device Status
    • MVS Display Commands
    • DFSMS Devserv Paths Command
    • MVS Display Matrix CHPID Command
    • ESCON Manager Display Device Status
    • Hardware Status Displays
    • Analyze Panels
    • 285 Hardware Management Console Display Hierarchy
  • Introduction to I/O Error Recovery
    • I/O Error Recovery Topics
    • ESCON Link Errors
    • Link Failure Flow
    • I/O Accessibility Recovery
    • Path Verification
    • Messages Summary
    • Path Problems
    • Device Boxing
    • Missing Interrupts
    • Logrec Record
    • Recovery
    • Sysplex Shared DASD Recovery
    • Hot I/O
    • Channel Recovery Errors Subchannel Recovery Control Unit Initiated & Reconfiguration

  • Processor and Storage Considerations
    • Processor Topics
    • Processor Unit Sparing
    • Central Processor/System Assist Processor Assignment and Reassignment
    • Internal Battery Feature (IBF)
    • Storage Topics
    • S/390 G3 Server Availability Enhancements
    • Storage and Hardware System Area Considerations
    • Dynamic Storage Reconfiguration
    • Recovery from DSR Problems Using the HMC
  • Consoles
    • Types of Consoles
    • Synchronous Messages
    • Consoles in a Sysplex
    • Console Failures
    • Console Buffer Shortage
  • Waits, Loops, and Contention
    • Waits & Restart Recovery
    • PSW
    • Disabled & Enabled Waits
    • Loops & Spin Loops
    • Contention
    • Serialization Mechanisms
  • IPL Problems
    • IPL Preparation , Process & Flow
    • Nucleus Load Problems
    • DASD Hardware Problems
    • Data Set Missing
    • No NIP Console
    • Duplicate Volumes
    • IPL Problems in a Parallel Sysplex
    • Stand-Alone Dump IPL

  • Parallel Sysplex
    • Couple Data Sets
    • Signalling Paths
    • Sysplex Timer
    • Sysplex Timer Console Failure
    • Coupling Facility
    • Sysplex Failure Management
    • Automatic Restart Manager
    • Recovery Timing Considerations
    • Sysplex System Commands
    • Exploiters of Parallel Sysplex
  • JES2 Considerations
  • Common Problem Resolution
    • Problem Identification
    • Information Collection and Communications
    • Problem Documentation
    • IBM Documentation Review
    • Use of available tools
    • Proper Problem Escalation
    • Tips & Techniques
    • Shop Specific Problems and review

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