This procedure can be carried out on production environments, while the services of the  cluster are running. This is a nondisruptive process. The addition or deletion of online computing resources is one of the administrator’s tasks. Do  the following steps, if the nodes of the PowerHA cluster are managed from PowerVC and you  need to increase or decrease the processor. 1. Click  Select virtual machines .  2. Select the VM or the PowerHA node where you want to increase or decrease the  processor, as shown in Figure 12-6. Figure 12-6 Selection of virtual machine for processor resizing 464  IBM PowerHA SystemMirror V7.2.3 for IBM AIX and V7.2.2 for Linux Figure 12-5 IBM PowerVM pane - Virtual Machines 12.1.2 Adding or deleting processors and memory in PowerVC