September 2002
Intermediate to advanced
332 pages
11h 1m
English
Content preview from IBM eServer zSeries 900 Technical Guide
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12 IBM eServer zSeries 900 Technical Guide
Intelligent Resource Director uses the concept of an LPAR cluster, the subset of z/OS
systems in a Parallel Sysplex cluster that are running as LPARs on the same z900 server. In a
Parallel Sysplex environment, Workload Manager directs work to the appropriate resources
based on business policy. With IRD, resources are directed to the priority work. Together,
Parallel Sysplex technology and IRD provide the flexibility and responsiveness to e-business
workloads unrivaled in the industry.
IRD has three functions: LPAR CPU management, dynamic channel path management, and
channel subsystem priority queuing.
LPAR CPU management
Workload Manager (WLM) and PR/SM dynamically adjust the weight and the number of ...
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