content_image/998591.jpg content_image/998592.jpg
In the Perform Model Conversion window, select Permanent upgrades to start the process, as shown in Figure 8-8. 

<img src='content_image/998591.jpg'>

The window provides several possible options. If you select the Retrieve and apply data option, you are prompted to enter the order activation number to start the permanent upgrade, as shown in Figure 8-9. 

## 8.5 On/Off Capacity on Demand 

<img src='content_image/998592.jpg'>

On/Off CoD allows you to temporarily enable PUs and unassigned IFLs that are available within the current hardware model. You can also use it to change capacity settings for CPs to help meet your peak workload requirements. 

## 8.5.1 Overview 

The capacity for CPs is expressed in millions of service units (MSUs). Capacity for speciality engines is expressed in number of speciality engines. Capacity tokens  are used to limit the resource consumption for all types of processor capacity. 

