System information

Chapter 1. Introduction to LPAR on IBM System i5 7

1.2.5 Complex scenario with shared uncapped partitions

Here is a complex example of an 8-way System i5 system with two OS/400 uncapped

partitions and one AIX uncapped partition, all using the shared processors pool.

Table 1-3 lSystem i5 system with two OS/400 uncapped partitions and one AIX uncapped partition

򐂰 As the total number of virtual processors for OS/400 partitions is more than the number of

processors available in the shared processors pool, only 8 licenses are required for

OS/400 although the total number of virtual processors configured is 10.

򐂰 As the number of virtual processors configured for the AIX partition is 6, the number of AIX

licenses required is 6.

򐂰 Note that here, it is a customer’s choice to balance the cost of additional software licenses

with idle processor capacity.

1.2.6 A more complex scenario with shared uncapped partitions and capacity

upgrade on demand

Here is a more complex example of the same 8-way System i5 system used in the previous

example, when we want to add dynamically one stand-by processor via CUoD for use by

OS/400 partitions.

Table 1-4 lSystem i5 system from previous example, adding one stand-by processor via CUoD

򐂰 First, to activate a CUoD processor, we need to enter the processor activation code

delivered by IBM after the customer order is processed.

This is done on the HMC using the Activate option of the Capacity Upgrade on Demand

tab on the managed system.

The activation of the stand-by processor materializes as an additional processor resource

in the shared processors pool.

򐂰 We now have to enter the license key for the additional processor resource to be used by

OS/400 partitions.The additional software license is generated by the IBM configurator if

the order of the CUoD feature specifies OS/400 use.

This is done using the WRKLICINF command and selecting option 1, Add License Key for

the product 5722-SS1 feature 5051 in both partitions P1 and P2.

Partition ID - OS Partition Type Processing Units -

Virtual Processors

Licenses

P1 - OS/400 Shared uncapped 4.0 - VP=7 7 + 3 = 10 but

shared pool max = 8

P2 - OS/400 Shared uncapped 1.0 - VP=3