000-221 · Question #167
An administrator saved a change to the active profile of an LPAR. When will the change take effect?
The correct answer is D. When the LPAR is shutdown and the profile is activated from the HMC. On IBM Power Systems, LPAR profile changes are saved as configuration templates and only become active when the partition is shut down and explicitly activated from the HMC.
Question
An administrator saved a change to the active profile of an LPAR. When will the change take effect?
Options
- AImmediately after the profile is saved
- BWhen the admin reboots the LPAR from within AIX
- CWhen the Rebuild Managed System task completes
- DWhen the LPAR is shutdown and the profile is activated from the HMC
How the community answered
(39 responses)- A13% (5)
- B5% (2)
- C3% (1)
- D79% (31)
Why each option
On IBM Power Systems, LPAR profile changes are saved as configuration templates and only become active when the partition is shut down and explicitly activated from the HMC.
Saving a profile in the HMC is a configuration write operation only; it does not interact with the running partition or alter its live resource allocation in any way.
Rebooting from within AIX performs a standard OS restart but does not cause the HMC to re-activate the LPAR profile, so updated profile settings are not applied.
'Rebuild Managed System' refreshes the HMC's inventory and state data for the managed system but does not activate partition profiles or push profile changes to running LPARs.
HMC LPAR profiles define the resource configuration (memory, processors, I/O) applied at partition activation time. Saving a change to a profile updates the stored template but does not alter the running LPAR's resources; the change only takes effect when the LPAR is fully shut down and then activated from the HMC, which reads and applies the updated profile.
Concept tested: HMC LPAR profile activation and change lifecycle
Source: https://www.ibm.com/docs/en/power-systems/9009-42A?topic=partitions-activating-logical-partition
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