2.4 Memory 54  IBM z14 (3906) Technical Guide The maximum physical memory size is directly related to the number of CPC drawers in the  system. Each CPC drawer can contain up to 8000 GB of physical memory, for a total of  8000 GB + (3 x 8192 GB) = 32576 GB, which is approximately 32 TB of installed (physical)  memory per system. The maximum and minimum memory sizes that you can order for each z14 model are listed  in Table 2-3. The minimum physical installed memory is 512 GB per CPC drawer. The minimum initial  amount of memory that can be ordered is 256 GB for all z14 models. The maximum customer  memory size is based on the physical installed memory minus the RAIM and minus the  hardware system area (HSA) memory, which has a fixed amount of 192 GB. The memory granularity, which is based on the installed customer memory, is listed in  Table 2-4. With the z14, the memory granularity varies from 64 GB (for customer memory sizes  256 - 576 GB) up to 512 GB (for CPCs having 4416 - 32576 GB of customer memory). Table 2-4 Memory ordering granularity Table 2-3 z14 memory sizes Model Number of CPC drawers Customer memory (GB) M01 1 256 - 8000 M02 2 256 - 16192 M03 3 256 - 24384 M04 4 256 - 32576 M05 4 256 - 32576 Granularity (GB) Customer memory (GB) 64 256 - 576 128 704 - 1600 256 1856 - 3904 512 4416 - 32576