Reassigning Non-Dedicated Processors - IBM Z9 Planning Manual

Availability option from being performed for the targeted book.You may
need to deactivate partitions or deconfigure processors to meet
requirements as indicated by the panel data.
Memory
Use this tab to view the corrective actions required for the memory
configuration conditions that are preventing the Perform Enhanced Book
Availability option from being performed for the targeted book. You may
need to deactivate partitions to meet requirements as indicated by the panel
data. The In-Use memory must be less than or equal to the available
memory on the remaining books within the system.
Single Path I/O
Use this tab to view the corrective actions required for the single I/O
configuration conditions that are preventing the Perform Enhanced Book
Availability option from being performed for the targeted book. You will need
to deconfigure all of the PCHIDs that are indicated by the panel data.
Single Domain
Use this tab to view the corrective actions required for the single I/O
domain configuration conditions that are preventing the Perform Enhanced
Book Availability option from being performed for the targeted book. You will
need to change the alternate path to a different book or deconfigure the
PCHID.
Single Alternate Path
Use this tab to view the corrective actions required for the single I/O
configuration conditions that are preventing the Perform Enhanced Book
Availability option from being performed for the targeted book. You will need
to correct the alternate path error condition or deconfigure the PCHIDs.

Reassigning Non-Dedicated Processors

Following is an example showing the Reassign Non-Dedicated Processors panel.
Use this panel to change or accept the system processor assignments that are
generated during the processing of the Prepare for Enhanced Book Availability
option. The processor values that are entered from this panel will be the processor
configuration utilized during the Perform Enhanced Book Availability processing.
WARNING
Note: The values should never be altered without approval from the system
programmer.
Chapter 2. Planning Considerations
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