System Managed Storage

System Managed Storage, Dfsms / sms, short SMS is a component of the operating system z / OS for managing disk and magnetic tape storage.

SMS allows you to create datasets on predefined pools of disks by their name, storage class, performance class, or attribute class. For example, For example, to specify that all datasets created by TSO users should be created on disks of a particular disk pool.

You can also set file attributes, or exceed the user's details.

When creating a dataset, For example, do not specify a volume.

wiki