In the example that is shown in Figure 8-3 on page 295, a z14 ZR1 Max4 with three active  CPs is upgraded with two more CPs. Because the Max4 can have only four active PUs, the  z14 ZR1 is upgraded from a Max4 to a Max12 by physically adding a PU SCM to the CPC  drawer. This upgrade is a  non-concurrent  upgrade. For the second upgrade, which is adding one CP and one IFL by way of CIU, enough  unassigned PUs are available to assign and activate the one CP and one IFL  concurrently . If  needed, more LPARs can be created concurrently to use the newly added processors. Software charges, which are based on the total capacity of the system on which the software  is installed, are adjusted to the new capacity after the MES upgrade. Software products that use Workload License Charges (WLC) might not be affected by the  system upgrade. Their charges are based on partition usage, not on the system total  capacity. For more information about WLC, see 7.8, “Software licensing” on page 277. A MES upgrade for memory can concurrently add memory by enabling, through LICCC, extra  capacity up to the limit of the currently installed memory cards. Physically installing more  memory cards and then enabling (part of) the new memory capacity is a non-concurrent  upgrade. The Preplanned Memory Feature is available to allow better control over future memory  upgrades. For more information see 2.5.6, “Preplanned memory” on page 45.  With proper planning, more memory can be added nondisruptively to z/OS partitions and  z/VM partitions. If necessary, new LPARs can be created nondisruptively to use the newly  added memory. An LPAR can dynamically take advantage of a memory upgrade if reserved storage is defined  to that LPAR. The reserved storage is defined to the LPAR as part of the image profile.  Reserved memory can be configured online to the LPAR by using the LPAR dynamic storage  reconfiguration (DSR) function. DSR allows a z/OS operating system image and z/VM  partitions to add reserved storage to their configuration if any unused storage exists.  The nondisruptive addition of storage to a z/OS and z/VM partition requires that pertinent  operating system parameters were prepared. If reserved storage is not defined to the LPAR,  the LPAR must be deactivated, the image profile changed, and the LPAR reactivated. This  process allows the extra storage resources to be available to the operating system image.  MES upgrades for I/O can concurrently add more I/O features by using one of the following  methods: 8.3.2 MES upgrades for memory 8.3.3 MES upgrades for I/O GLYPH<SM590000> Installing more I/O features on an installed PCIe+ I/O drawer. GLYPH<SM590000> By using the installed PCIe I/O drawer that provides the number of I/O slots that are  required by the target configuration. GLYPH<SM590000> Adding a PCIe+ I/O drawer to hold the new I/O features if not enough slots are available in  the existing PCIe+ I/O drawer configuration. 5 5 Adding a PCIe+ drawer concurrently is possible only when the CPC drawer has free PCIe fanout slots. If not, first a  non-current CPC drawer feature upgrade is required. 296  IBM 14 Model ZR1 Technical Guide