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The number of processors that are supported by various z/OS and z/VM releases are listed in Table 8-3. 

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a. Supported Linux on Z distributions (for more information, see Chapter 7, “Operating system support” on page 255). 

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) or Taylor Fit Pricing (TFP) 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 326. 

## 8.3.2 MES upgrades for memory 

MES upgrades for memory can concurrently add more memory in the following ways: 

GLYPH<SM590000> Through LICCC, which enables more capacity up to the limit of the currently installed DIMM memory cards 

GLYPH<SM590000> Concurrently installing more CPC drawers and LICCC-enabling memory capacity on the new CPC drawers. 

The Flexible Memory Feature is available to allow better control over future memory upgrades. For more information about flexible memory features, see 2.5.7, “Flexible Memory Option” on page 65. 

If the z15 server is a multiple processor drawer configuration, you can use the EDA feature to remove a processor drawer and add DIMM memory cards. It can also be used to upgrade the installed memory cards to a larger capacity size. You can then use LICCC to enable the extra memory. 

