Illustrated Example Of Online Cell Migration - HP Integrity rx7620 Configuration

Hp-ux 11i v3 dynamic npartitions - features and configuration recommendations
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Illustrated example of online cell migration

This example of using Dynamic nPartitions operations to migrate a cell from one partition to another
features a server complex containing eight cells. The complex is partitioned with cells 0, 1, and 2 in
nPartition 0. Cells 3, 4, 5, 6, and 7 are in nPartition 1. Each partition runs a separate instance of
the HP-UX operating system. Figure 2 shows the initial configuration.
Figure 2.
HP-UX instance 0
HP-UX instance 1
nPartition 0
nPartition 1
cell 0
cell 1
cell 2
cell 3
cell 4
cell 5
cell 6
cell 7
base cell
float cell
float cell
float cell
base cell
base cell
base cell
base cell
If partition 0 is underutilized, or if partition 1 is running a higher priority workload, the system
administrator might decide to migrate cell 2 from partition 0 to partition 1. Assuming that cell 2 does
not have associated I/O, the migration sequence begins with the command
parolrad -d 2
This command, entered in a terminal session on HP-UX instance 0, causes HP-UX to stop using all
resources on cell 2, and it causes the cell to be reset. The new state of the complex is shown in
Figure 3:
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