Configuring storage-class memory (SCM)

The amount of storage-class memory (SCM) that is available to a z/OS® system is specified using the Manage Flash Allocation dialog from the SE/HMC Configuration menu. This dialog also specifies the amount of SCM that is initially brought online to the LPAR, after which additional SCM can be brought online using the CONFIG ONLINE command. For complete command usage information refer to z/OS MVS System Commands.

z/OS currently supports up to 16 TB of SCM within a single system image, but the maximum amount of SCM that is available to the central-processing complex (CPC) is limited by the hardware model. SCM and the data that resides on it can only be accessed from the partition on which the SCM was defined.