Explanation: DUMP, INCREMENTAL, and TOTAL
are mutually exclusive optional parameters of the VOLUME parameter
specifying which data sets are to be backed up.
- DUMP
- specifies that a DFSMSdss full-volume dump be performed for
a single volume. All subparameters specified are used to process
the volume, overriding the dump classes associated with the volume.
Note: The DUMP subparameters DUMPCLASS, RETENTIONPERIOD, and STACK
are described separately.
- INCREMENTAL
- specifies that only those data sets that have never been backed
up or have been changed since their last backup version was created
are eligible for backup. If a data set is a changed data set, the
frequency requirement as defined in the data set’s management
class must be met before DFSMShsm backs up the data set.
- TOTAL
- specifies that all the data sets on the volume or volumes are
backed up by DFSMShsm if it supports the data set organization. DFSMShsm
backs up all other data sets on the volume, except for data sets that
have been excluded by an ALTERDS or HALTERDS VERSIONS(0) command,
not just changed data sets that have met the frequency of backup.
Defaults: The default is INCREMENTAL.