For more information about how to define an Image Profile, see 5.4, “Creating an Image  Profile on the 3907 Support Element” on page 99. A Load profile is needed to define the channel address of the device from which the operating  system is loaded. Depending on the SE model and machine type, the maximum number of  Load profiles that are allowed for each CPC is 511. A Group profile defines the group capacity value that can be customized in determining the  allocation and management of processor resources that are assigned to the logical partition  in a group. The activation profile that you use to activate a logical partition prepares it for running  software products that use the Crypto Express feature. The use of the feature’s cryptographic  facilities and functions requires customizing the logical partition’s activati on profile to  complete the following tasks: Load profile Group profile 2.7.2 Cryptographic configuration 2.7.3 Defining the LPAR Group Control GLYPH<SM590000> Install the CP Assist for Cryptographic Facility (CPACF) DES/TDES Enablement feature if  you are planning to use ICSF. GLYPH<SM590000> Provide it access to at least one Crypto Express feature. This goal is accomplished by  selecting from the Usage Domain Index and the Cryptographic Candidate list. GLYPH<SM590000> Load it with an operating system, such as z/OS, that supports the use of cryptographic  functions. GLYPH<SM590000> Group Capacity is capping the processor consumption to the value of the four-hour rolling  average (4HRA) for a group of LPARs.  GLYPH<SM590000> LPAR group absolute capping value is independent of the four-hour rolling average  consumption and limits the amount of physical processor capacity that is used by a group  of LPARs. The following methods can be used to limit the processor capacity usage for a group of  LPARs and help you control software cost: Both of these methods can be used concurrently and in combination with LPAR capping. Consider reevaluating the parameters in a scenario where the values must be migrated from  a previous generation CPC to a z14 ZR1 so that they fit to the new CPC.  Tip:  Capacity management that uses capping technologies is an ongoing process that  must be monitored and adjusted over time. Temporary or permanent capacity changes  also must be considered when capping technologies are used. Chapter 2. Planning considerations for CPC in PR/SM mode  15