Live Partition Mobility gives you the ability to migrate a Partition from one Managed System to another. The movement of data is transparent and will not create an outage to the client applications.
LPM can greatly reduce outages to applications caused by Hardware Maintenance and can also be used for performance management such as scaling up to a larger System. System Maintenance that may require a shutdown of the Managed System no longer requires an outage of your applications. The client LPAR’s are simply migrated to another Managed System, allowing you to perform Maintenance without an outage to your users. After Maintenance has been completed, the Partitions can be moved back to the “primary” Managed System.
Live Partition Mobility can be used to move Partitions from a Server with resource constraints to a Server or Servers that have more resources. Once the workload has been completed, the Partition can be moved back to the original System, freeing up resources on the target System.
What Live Partition Mobility Isn’t
While LPM provides higher availability by reducing planned outages, it is not an HA solution like HACMP. With Live Partition Mobility, the operating System image is also transferred to the takeover System. If the problem is related to the operating System, it will still exist once the Partition has been moved.
HACMP provides a higher level of security for your data with added redundancy by switching to a different Operating System image.