HP Instant Capacity (iCAP) manual Setting usage rights for a partition, Deactivating Cores

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Setting usage rights for a partition

Self enforcement requires you to decide how many usage rights are to be assigned for a partition and set it. You can use the icapmodify command for this purpose. The number of active cores is set to the number specified as a command argument. You must run the command after you boot to a partition for the first time and subsequently after resizing the partition:

icapmodify –s <number of core usage rights>

Sample output:

# icapmodify -s 4

4 cores are intended to be active and are currently active.

Deactivating Cores

You must deactivate the cores in order to maintain compliance when usage rights are moved. You can deactivate the cores until a minimum number required by the partition is reached:

icapmodify –d <number of cores to deactivate>

IMPORTANT: In HP Integrity Superdome 2, an active partition must have a minimum of one active core. This is unlike the previous generation of servers where a partition with x cell boards would required a minimum of x core usage rights (one per cell board).

Sample output:

# icapmodify -d 1

3 cores are intended to be active and are currently active.

Activating Cores

Cores can be dynamically activated on a partition to address any additional demand. As mentioned before, iCAP does not perform any compliance check to see if the total active cores exceed the total usage rights purchased. It is required that the cores should be available to the partition for activating them. that is, core activation request will fail if the request exceeds the assigned number of cores for the partition. Execute the following command to activate the cores:

icapmodify –a <number of cores to activate>

Sample output:

# icapmodify -a 1

4 cores are intended to be active and are currently active.

Using iCAP Memory

The iCAP memory is offered in units of 16 GB, and the RTU is available in units of 4 GB. During the time of activation, you must purchase enough iCAP RTUs to activate all the memory on the cell blade. After the purchase, the iCAP cell blade can be turned on. You must reboot the partition on which the iCAP memory is activated for the iCAP changes to take effect. The cores in the cell blade with inactive memory need not be activated for the memory to be activated. After adding a cell blade to a partition to activate the memory, you must adjust the number of active cores to ensure compliance. Figure 8-1describes the configuration options for iCAP memory.

132 Using Instant Capacity on HP Integrity Superdome 2