Running Dynamic Platform Optimizer (DPO) to optimize an LPAR

Describes the procedure that you need to follow for running DPO to optimize an LPAR for IBM Storage Scale.

To run DPO to optimize LPAR for IBM Storage Scale, you need to ensure that the best memory affinity is made available to the partitions. Availability of memory is relevant when there are more than one LPAR per system.
Note: The following procedure is not required if you have a single system that has all processors and memory that is allocated to a single partition.
  1. Shut down the operating system to display the LPAR status as Not Activated.
  2. Change the partition profile for IBM Storage Scale. For more information, see Logical partitioning (LPAR) hardware allocations for NUMA-based Power servers.
  3. Activate the changed profile and load the operating system by pointing to SMS.
    This moves the memory and processor configuration, you created from the profile that is resident in the HMC, to the Hypervisor without the need to load the operating system.
  4. Shut down the partitions again.
  5. Run the Dynamic Platform Optimizer (DPO) for the Server after all the partitions on it are correctly configured by using the following command in the HMC command line: 
    optmem -m <managed server> -t affinity -o start
  6. Run the following command from the HMC command line to monitor the progress of the DPO process: 
    lsmemopt -m <managed server>
  7. Activate the partitions by using the current configuration when the DPO process is completed and the partitions are fully contained (both processor and memory) to their own processor module.