MGMTCLAS parameter

Parameter type

Keyword, optional

This parameter is useful only with SMS-managed data sets.

Without SMS, there are no DD parameters that provide this function.

Purpose

Use the MGMTCLAS parameter to specify a management class for a new SMS-managed data set. The storage administrator at your installation defines the names of the management classes you can code on the MGMTCLAS parameter.

After the data set is allocated, the attributes in the management class control:

Migration of the data set, including migration from primary storage to DFSMShsm-owned storage to archival storage
Backup of the data set, including frequency of backup, number of versions, and retention criteria for backup versions
Automatic deletion of data sets
Automatic release of unused space in data sets

The Hierarchical Storage Manager (DFSMShsm) or a functionally equivalent program performs these functions.

If SMS is not installed or is not active, the system syntax checks and then ignores the MGMTCLAS parameter.

SMS ignores the MGMTCLAS parameter if you specify it for an existing data set.

The use of a management class can be protected by RACF®.

References

See z/OS DFSMS Using the Interactive Storage Management Facility for information on how to use ISMF to view your installation-defined management classes.