Data files

The DFSMSdss data file is an output data set tape file that contains copies of the backed up data sets. They are the data sets you specified to be backed up in the selection data sets.

The format of the data file name is outputdatasetprefix.D.CnnVnnnn. This is the same outputdatasetprefix you previously specified in the aggregate group.

The name of the DFSMSdss data file in the example is PAY1.D.C01V0001. It contains copies of the following data sets, based on the selection data set entries previously made:
The name of the internal I/O data file in the example is PAY1.O.C01V0001. It contains copies of the following data sets, based on the selection data set entries previously made:

The format of the data file name is outputdatasetprefix.O.CnnVnnnn. This is the same outputdatasetprefix you previously specified in the aggregate group.

If you need to direct your ABACKUP internal I/O data file for a unique copy number to DASD, this can be done only if your DFSMSdss data file for the same copy number is directed to DASD.

The "D" data file is created if your INCLUDE statement specifies data sets that reside on Level 0 DASD volumes. The "O" data file is created if your INCLUDE statement specifies user tape data sets or data sets migrated to ML1 or ML2 DASD, or ML2 tape. If you specify the STACK option, a "D" and "O" data file is always created, even when you do not provide an INCLUDE statement. If you omit both the STACK option and the INCLUDE statement, neither data file is created.

If you choose to have any or all of your ABACKUP output files directed to DASD volumes, there are special precautions you must observe for successful recovery of the backed up data:
Parent topic: Aggregate backup output