Table 6-2 shows the context-sensitive help for the ROHA entry point. Start smit sysmirror  and select  Cluster Applications and Resources  Resources Configure User Applications (Scripts and Monitors)  Resource Optimized High  Availability . The next panel is a menu panel with a title menu option and three item menu  options. Its fast path is  cm_cfg_roha  (Figure 6-3). Table 6-3 shows the help information for the ROHA panel. Chapter 6. Resource Optimized High Availability  169 Table 6-3 Context-sensitive help for the ROHA panel Figure 6-3 ROHA panel Table 6-2 Context-sensitive help for the ROHA entry point Name and fast path Context-sensitive help (F1) ROHA # smitty cm_cfg_roha Select this option to configure ROHA. ROHA performs dynamic  management of hardware resources (memory and CPU) for the PowerHA  SystemMirror account. This dynamic management of resources uses  three types of mechanism: DLPAR, On/Off CoD, and EPCoD. If the  resources that are available on the central electronic complex (CEC) are  not sufficient, and cannot be obtained through a DLPAR operation, it is  possible to fetch external pools of resources that are provided by either  On/Off CoD or EPCoD. On/Off CoD can result in extra costs, and a formal  agreement from the user is required. The user must configure HMC for the  acquisition and release of resources.  Resource Optimized High Availability Move cursor to desired item and press Enter. HMC Configuration Hardware Resource Provisioning for Application Controller Change/Show Default Cluster Tunables Name and fast path Context-sensitive help (F1) HMC Configuration # smitty cm_cfg_hmc This option configures the HMC that is used by your cluster configuration,  and to optionally associate the HMC to your cluster’s nodes. If no HMC is  associated with a node, PowerHA SystemMirror uses the default cluster  configuration. Change/Show  Hardware Resource  Provisioning for  Application Controller # smitty  cm_cfg_hr_prov This option changes or shows CPU and memory resource requirements  for any application controller that runs in a cluster that uses DLPAR, CoD,  or EPCoD capable nodes, or a combination. Change/Show Default  Cluster Tunables # smitty  cm_cfg_def_cl_tun This option modifies or views the DLPAR, CoD, and EPCoD configuration  parameters. 6.2.2 ROHA panel