Storage Management Subsystem (SMS)

SMS is an automated storage management system that removes many of the manual procedures that are associated with managing datasets, such as determining which volume a dataset should be stored on, calculating the amount of space to allocate to the dataset, and determining when a dataset is no longer needed and can therefore be deleted or moved to off-line storage. When creating a dataset under SMS, you assign that dataset to a pre-defined storage class, management class and data class. By specifying the class, SMS will perform the required operations automatically. In addition, an installation can set up automatic class selection (ACS) routines, which will automatically pick the SMS classes based on the dataset name.