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Robert Vaupel, Ulrich Hild, Stefan Wirag
z/OS Workload Management – Overview, Strength and Outlook
Keywords: Workload Management, Process Management, Performance and Systems Management
One of the key differentiating strengths of the z9* mainframe platform and z/OS* operating system is the ability to run multiple heterogeneous workloads at the same time within one z/OS image or across multiple images that share the same physical processor. The function which makes this possible is the z/OS Workload Manager (WLM). WLM does not only re-distribute the resources within one system image, resources such as CPU, I/O, memory or server processes, it also functions across multiple virtual system images sharing the same hardware and running z/OS, Linux, or zVM operating system. Furthermore it also assists routing components and products to dynamically direct work requests associated with a multi-system workload running on z/OS within a Parallel Sysplex*. Now the WLM conception will leave the z9 platform and begins to manage the server resources surrounding the mainframe so that it starts to encompass the whole enterprise. This new function is the Enterprise Workload Manager (EWLM). This article will give an overview of the fundamental concepts of z/OS Workload Manager and give an introduction to the next step in the evolution of enterprise workload management.
it – Information Technology (vormals it+ti), Oldenbourg Wissenschaftsverlag
Print ISSN: 1611-2776
Volume: 48, 05/2006
Pages: 294 - 303