# Dataset SMS

The Dataset SMS attributes provide information about the SMS constructs associated with a data set. Additionally, the number of stripes, if applicable, is provided.

Data Class: The SMS data class. This value describes attributes and space requirements for SMS managed data sets. Data Classes contain attributes that govern data set allocation. These attributes are set by the storage administrator and users cannot change them.

Dataset Name: The MVS™ data set name.

Managed System: The SMS name of this system.

Management Class: The SMS management class. Management class is a collection of management attributes, defined by the storage administrator, used to control the release of allocated but unused space; to control the retention, migration and backup of data sets; to control the retention and backup of aggregate groups; to control the retention, backup and class transition of objects.

Storage Class: The SMS storage class.

A collection of storage attributes that identify performance goals and availability requirements, defined by the storage administrator, used to select a device that can meet those goals and requirements.

Stripe Count: The number of stripes which comprise this data set.

A stripe is the portion of a striped data set that is located on one volume. The records in that portion are not always logically consecutive. The system distributes records among the stripes such that the volumes can be read from or written to simultaneously.