The Managing and Processing z/OS Data course describes how I/O, which is the reading and writing to external devices such as disks, tape, printers, and networks, is performed in a z/OS environment. It then discusses the various z/OS-related resources that can be shared and the role of workload management in prioritizing workloads.
Operations, programming, and technical support personnel requiring knowledge about z/OS; this course provides a broad introduction to many aspects of the z/OS environment.
Successful completion of the z/OS – Concepts course, or equivalent knowledge.
After completing this course, the student will be able to:
- Describe how I/O is processed in a mainframe environment
- List the system components that participate in z/OS system resource sharing
- Describe how Workload Management (WLM) manages resources
How z/OS Processes I/O
The I/O Operation
CCW and Coupling Channels
Open Systems Adapter
Shared Memory Communication
Remote Direct Memory Access
Mainframe Resource Sharing
Physical and Logical CPU Sharing
Sharing Across the SYSPLEX
Workload Management and WLM
The Need to Share Resources
Dispatchable Units, Address Spaces, and Enclaves
WLM Service Classes
Donor Receiver Concept