Communications Storage Manager

The Communications Storage Manager (CSM) facility is used by authorized programs to manage subsystem storage pools. CSM reduces data moves by providing a flat storage model that is accessible at multiple layers of the process model and across MVS™ address space boundaries. In addition, CSM provides the following technical advantages:

• MVS cellpool-like services
• Automatic handling of the contraction and expansion of storage resources
• Handling of different types and sizes of storage requests (for example, pageable and fixed)