438 IBM BladeCenter JS23 and JS43 Implementation Guide
11.2 Preparation
This section describes the settings and configurations that must be verified and
possibly changed to prepare the local and remote VIOS systems and partitions
for partition mobility.
11.2.1 VIOS (source and target) requirements
We’ll start with VIOS (source and target) considerations.
Memory region size
The memory region size is the smallest block of memory that can be assigned to
or changed in an LPAR. The current setting can be reviewed by clicking the
View/Modify System Properties link from the Navigation area and then
selecting the Memory tab. By default is dependent on the amount of system
memory installed. The value is set to 32MB (automatic) as shown in Figure 11-3
on page 439. The memory region size must be the same for the source and
target VIOS systems. If the value is changed, a VIOS power down and restart is
required (not just a basic shutdown reboot).
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