Using storage management facilities

The following storage management facilities are needed to use BWO:

For more information about these facilities see the following sections.

Storage management subsystem (SMS)

SMS is the approach to DASD storage management in which:

This is sometimes referred to as DFSMS and complements functions of MVS/DFP and other individual products of the Data Facility product family. For more details about SMS, see the following publications:

Message on recall of backed up data sets

If you use DFHSMS to manage your VSAM data sets, you should consider carefully the period after which your CICS VSAM data sets are migrated to primary or secondary storage. If a migrated data set has to be recalled for CICS, it can take several minutes from primary storage, or longer from secondary storage. While the recall is taking place, the user is locked out, and no other opens or closes on that data set can be performed until the data set has been recalled.

If a migrated data set has to be recalled, CICS issues message DFHFC0989 to the system console, to notify the user that a recall is taking place, and to indicate whether it is from primary or secondary storage.

Data facility hierarchical storage manager (DFHSM)

DFHSM is an IBM-licensed program to manage volumes and data sets. For more details about DFHSM, see the:

Data facility data set services (DFDSS)

DFDSS is an IBM-licensed program used to copy, move, dump, and restore data sets and volumes. For more details about DFDSS, see the:

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