IBM Z Systems Environment - Introduced & Explained

This two-day course is the essential introduction to Z Systems - IBM's mainframe-based enterprise computing environments, and to IBM's flagship operating system, z/OS.
The course introduces the concepts and terminology that are encountered and used by IS personnel every day, and explains them in an easily understandable manner.
This course provides a firm foundation for anyone moving into the world of IBM Z Systems mainframe-based computing.

This course is also available for exclusive, one-company presentations and for live presentation over the Internet, via the Virtual Classroom Environment service.

Virtual Classroom Environment dates - click to book!

UK Start Times

18 March 2024 8 April 2024 2 May 2024 7 June 2024

What is a 'Virtual Classroom Environment'?


What do I need?

  • webcam
  • headphones with microphone
  • sufficient bandwidth, at least 1.5 Mb/s in each direction.

What you will learn

On successful completion of this course you will be able to:

  • list the principal components found in IBM Z Systems environments
  • describe how data is stored, the different data codes and types, and the devices used
  • explain the concepts of operating systems
  • describe the IBM mainframe operating systems and their associated software, as available in IBM Z Systems
  • describe the functions carried out in Z Systems based IS departments
  • understand the different numbering systems and representations used in Z Systems.

Who Should Attend

The course is suitable for all new and trainee programmers, operators and technicians, as well as non-technical staff working in an IT environment who require a background understanding of IBM's Z Systems.




2 days

Fee (per attendee)

£1050 (ex VAT)


This includes free online 24/7 access to course notes.


Hard copy course notes are available on request from

at £50.00 plus carriage per set.

Course Code



The Mainframe Computer

Origins; Types of computers; General purpose; Scientific; Scientific AND general purpose?; The PC; The Graphical User Interface (GUI); The application development backlog; The Local Area Network (LAN); Who runs the distributed data centre?; Total Cost of Ownership (TCO); Today's real world; What is a mainframe?; What can it do?; Hardware and software; Types of computing; Batch; Batch processing today; Interactive; On-line; Real time.

Enterprise Computing Hardware

Enterprise computing hardware; An IBM mainframe computer room and its contents; The processor complex; Parallel sysplex; Logical partitions; Channels; Controllers; I/O units; Addressing; Local and remote; Disk storage; Old technology; Storing data on a traditional disk; The cylinder concept; Sectors; Cache storage; RAID - a newer technology; Disk Mirroring (RAID-1); Data Striping (RAID 5/6); Remote Disk copy; Virtual disks; Why magnetic tape?; Tape cartridges; High performance tapes; Automated Tape Libraries; Virtual Tape Servers; Other Input/output peripherals.

Z Systems Programs

What is software?; Types of software; System software; Exits; Application software; What does a program comprise?; Main module; Subroutines and procedures; Functions; Data; EBCDIC; ASCII; Building a program; Programming languages; Executing a program.

Z Enterprize Organisation

Who runs the IT environment?: Operators, Help Desk Operatives, Security Administrators, Systems Programmers, Storage Administrators, Network Analysts, Application Developers/Support, Database Administrators.

The Z Systems' Operating Systems

Z Systems operating systems; z/OS operating systems; zVM operating systems; z/VSE operating systems; Linux operating systems; z/TPF operating systems.

z/OS Operating System

The z/OS operating system; Some important definitions; Address spaces; Common area; Private area; Main components of MVS; MVS processing environments; On-line; TSO; z/OS communications server; VTAM; TCP/IP; JES2; Transaction Servers: CICS, IMS; Databases: Db2, IMS; UNIX System Services; WebSphere Application Server.

Numbering Systems

Numbering systems; Decimal arithmetic; Binary arithmetic; Binary subtraction; Negative binary numbers; 2's complement; Hexadecimal arithmetic; Hexadecimal / binary relationship; Extended Binary Coded Decimal Interchange Code; Packed decimal numbers; Memory addressing.

What the students say

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