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10 Hardware Management Console (HMC) Case Configuration Study for LPAR Management
Capacity on Demand
The Capacity on Demand (CoD) for POWER5 systems offers multiple options,
including:
Permanent Capacity on Demand:
– Provides system upgrades by activating processors and/or memory.
– No special contracts and no monitoring are required.
– Purchase agreement is fulfilled using activation keys.
On/Off Capacity on Demand:
– Enables the temporary use of a requested number of processors or
amount of memory.
– On a registered system, the customer selects the capacity and activates
the resource.
– Capacity can be turned ON and OFF by the customer; usage information
is reported to IBM.
– This option is post-pay. You are charged at activation.
Reserve Capacity on Demand:
– Used for processors only.
– Prepaid debit temporary agreement, activated using license keys.
– Adds reserve processor capacity to the shared processor pool, used if the
base shared pool capacity is exceeded.
– Requires AIX 5L Version 5.3 and the Advanced POWER Virtualization
feature.
Trial Capacity on Demand:
– Tests the effects of additional processors and memory.
– Partial or total activation of installed processors and/or memory.
– Resources are available for a fixed time, and must be returned after trial
period.
– No formal commitment required.
Note: Take into consideration that changes in the profile will not get activated
unless you power off and start up your partition. Rebooting of the operating
system is not sufficient.