HP Instant Capacity User's Guide for versions 8.x > Chapter 4 Using Instant Capacity to Manage Processing Capacity

Load-Balancing Active Cores

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Active cores can be redistributed across any or all partitions of a hardware-partitionable system if those partitions contain inactive cores.

For example, consider a system with two partitions:

  • Partition 1 has 5 active cores and 3 inactive cores

  • Partition 2 has 8 active cores and 0 inactive cores

You need to add processing power to Partition 1 because of application demand and you notice that the active cores in Partition 2 are under-utilized.

Deactivating an active core in Partition 2 decreases the number of active cores in that partition, and activating one of the cores in Partition 1 increases the number of active cores in that partition. The total number of active cores in the complex is the same at the end of this operation.

IMPORTANT: To remain in compliance, it is important to perform the deactivation operation first.

This leaves the following:

  • Partition 1 now has 6 active cores and 2 inactive cores

  • Partition 2 now has 7 active cores and 1 inactive core

Does the redistribution of active cores affect compliance?

No, because you did not change the overall number of active cores in the complex. If it was in compliance prior to the redistribution, it remains in compliance. You should ensure that you have proper licensing for all HP and third party software when performing load balancing.