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DFSMSdfp. Subtopics: Chapter 1. Introducing the Storage Management Subsystem · Chapter 2. Preparing for the Storage Management Subsystem. DFSMShsm Storage Administration Reference. This topic contains . HOLD, Prevents all or part of DFSMShsm’s functions from running. Also causes the data . Abstract for DFSMSdfp Storage Administration · z/OS information · Summary of . Example: storage class ACS routine specifying both volume reference and unit.

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See Recovering control data sets using the enhanced CDS recovery function for the recommended way to recover control data sets that dfsmd outside the DFSMShsm address space.

DFSMSdss Storage Administration Reference

Requesting a fast replication recovery HOLD command: Displays the contents of locations within the DFSMShsm address space identified by an absolute address, a relative address, or a qualified address. Backs up aggregate groups of user-defined data sets for recovery at another location.

Use the following commands and parameters to determine status: Deletes a migrated data set without recalling the data set.

Deletes one or more unneeded fast replication backup versions. If a command is running for a long time and is returning data to your terminal, you can be prevented from performing other arministration at your terminal. Creates a backup version of a specific data set.

In an SMS environment, the storage management functions defined in the management class and the storage group control the SMS-managed data sets in place of the parameter or command definitions within DFSMShsm. Uses fast replication to recover a single volume or a pool of volumes from the managed backup versions. Moves all migration copies meeting a specified age criteria between DFSMShsm migration or backup volumes.


Removes a volume from the list of volumes managed by DFSMShsm and changes existing volume information. Deletes all eligible expired backup versions from all backup volumes. Moves eligible data sets from DFSMShsm-managed volumes to migration volumes or from migration volumes to other migration volumes.

DFSMShsm Storage Administration Reference This topic contains detailed explanations of the operator, storage administrator, and system programmer commands, which are listed in alphabetical order.

The list command that is causing you trouble does not restart.

Use adkinistration following commands to maintain and recover the control data sets and the DFSMShsm address space. Requests that DFSMShsm back up eligible data sets on one or more volumes, in one or more storage groups, or on all primary volumes; or that it back up the control data sets.

A specific request number All requests for a particular user All requests for a particular data set.

3.27 Chapter 60. MIGRATE Command for DFSMShsm: Requesting a Space Management Function

Changes the number of backup versions maintained and the frequency of creating backup versions for a non-SMS-managed data set. This topic contains detailed explanations of the operator, storage administrator, and system programmer commands, which are listed in alphabetical order. Use the following commands to directly manage data sets or volumes as opposed to the automatic management functions of DFSMShsm: Replaces references to original tapes with references to alternate tapes.


Referencr causes the data set backup switchtapes storgae to occur immediately. This command also corrects discrepancies in the common recall queue. Long-running commands are limited to having only one of each such command being performed by DFSMShsm at any time.

Combines the entries in the journal data set with a restored backup copy of one or all of the control data sets. Creates a fast referenxe backup version for each volume in a specified copy pool.

Stotage commands can also run for a long time. Replacing cartridge-type tape volumes with their alternate volumes TRAP command: Table 2 shows these commands and the SMS construct that assumes their functions. It also defines the automatic backup cycle, the secondary space management cycle, the dump cycle, dump classes, the volumes for aggregate recovery, and times for automatically demounting tapes currently in use by data set backup.

Table of Contents

Deletes all the backup versions or specific backup versions of a specific data set. Update specific fields within the control data sets: To stop such a command from interfering with your use of your terminal, have the computer system operator issue a HOLD command for the function that is causing the interference. Note, that the first four commands are only for diagnosis and repair.