The terminology used in this chapter is:
Backing up (copying) data from your online system to the CA Disk archives, leaving the original data set in place.
The process of backing up only those data sets that have been modified since the previous backup. This type of backup runs faster than a full volume backup and does not needlessly use space in the CA Disk archives for redundant copies of data sets that have not changed.
Backing up data sets to the CA Disk archives, and then deleting the original. This is equivalent to moving or migrating the data set from your online system to the CA Disk archives. From the CA Disk archives, data sets can be restored or recalled to your online system, or data sets can eventually be expired or rolled off the archives.
Refers to deleting the original data set without making a backup copy in the CA Disk archives.
Refers to deleting an expired data set without making a backup copy in the CA Disk archives. The expiration date can reside in any of the following areas:
These concepts are implemented with the BACKUP, ARCHIVE, DELETE, and EXPIRE commands described as follows. These commands in turn run under the umbrella of DSCL, documented in the section Data Storage Command Language in the chapter "Basic System – DMS PROC."
Depending on how you specify selection criteria and the action commands, you can use these backup/archive/delete/expire features to perform these and other data storage management tasks:
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