
194 IBM eServer zSeries 900 Technical Guide
5.5 Intelligent Resource Director
Intelligent Resource Director (IRD) is a new capability only available on the z800 and z900,
running z/OS. IRD is a function that optimizes processor CPU and channel resource
utilization across logical partitions within a single z900.
5.5.1 IRD overview
The Intelligent Resource Director (IRD) is a new feature introduced in z/OS, extending the
concept of goal-oriented resource management by allowing you to group system images that
are resident on the same zSeries server running in LPAR mode, and in the same parallel
sysplex, into an “LPAR cluster.” This gives Workload ...