The information contained within this set of documentation was primarily collected from various IBM manuals. SMS can automatically assign, based on installation policy, those services and data definition attributes to data sets when they are created. IBM storage management-related products determine data placement, manage data backup, control space usage, provide data security, and perform disaster backup and recovery. Reduce the labor involved in storage management by centralizing control, automating tasks, and providing interactive controls for storage administrators. Reduce the user's need to be concerned with the physical details of performance, space, and device management.
Users can focus on using information instead of managing data.
The user would also have to calculate the amount of space required for the data set in terms of tracks or cylinders. This means the user has to know the track size of the device which will contain the data set. With system-managed storage, users can let the system select the specific unit and volume for the allocation. This means the user does not need to know anything about the physical characteristics of the devices in the installation. Automated DASD Space Management System-managed storage enables users to automatically reclaim space which is allocated to old and unused data sets.