z/OS Internals
Mainframe Training Overview
This course provides a detailed examination of z/OS for systems programmers. Topics include an introduction to computer systems hardware and an exploration of z/OS architecture, system services and functions, storage management mechanisms, and I/O processes. Each section will also explore the associated control block structures associated with the z/OS operations being looked at.
Experienced systems programmers with a need for a more detailed understanding of z/OS functions. Due to the technical nature of this material, the student should have several years experience in the z/OS environment.
5 days
Mainframe Training Audience
Mainframe Training Course duration
Mainframe Training Course outline
Introduction to Computer Systems Architecture
Examine processor architecture and its role in supporting z/OS facilities.
Introduction to storage hierarchy: L1 and L2 cache memories and various architectural enhancements to enable processors to achieve their rated speeds.
Review of processor power ratings and their associated metrics.
z/OS Architecture
Interrupt handling and SVC functions
Address space structure
Cross memory services
Logical partitioning (LPAR)
System Initialization (IPL)
IPL process details
IPL Program functions
Nuclear Initialization Program
Master Scheduler Initialization
System Services and Functions
Role of z/OS Dispatcher
Task management
Resource serialization
Recovery/Termination management
Virtual Lookaside Facility (VLF)
Storage Management Mechanisms
Real storage management:
Central and expanded storage usage
Virtual storage management:
Paging/Swapping mechanisms
Auxiliary storage management
I/O Processing
Introduction to DASD hardware functions:
CKD, ECKD, and FBA devices
Parallel Access Volumes (PAV)
Volume Affinity
Disk arrays (RAID)
Components of I/O operation:
Introduction to channel command processing
Access method services
Caching mechanisms
z/OS Exploitation Opportunities
Dataspaces/Hiperspaces
Access register usage
Batchpipes
Hiperbatch/DLF
Batch LSR
Parallel sysplex
Data buffering
z/OS Workload Management
Metrics associated with performance objectives
Basic control mechanisms of WLM
