How SMS Restores Data
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Storage Management Services Administration Guide
During a restore session, SBCON reads the backup storage media, and the
Target Service Agent (TSA) compares the media data set to the existing hard
disk data set. The Target Service Agent evaluates each data set according to
the following criteria:
Is this
data set
a subset of what is being restored?
Is this data set found on the hard disk?
Which parts of the data set are subject to restoring?
Is this data set a parent or a child, and is the Overwrite parameter set to
Yes or No?
If the parameters for a child are set to Overwrite Only if Newer, does the
backup copy have a more recent date than the existing copy?