It is very important for SAP Customer to develop an appropriate approach to management of data lifecycle. In this context retention of data is very important. Retention period should not be longer than necessary (for the purposes for which the data was obtained). When purpose expired / terminated, data should be removed. The SAP ILM (Information Lifecycle Management) solution could be very helpful in data lifecycle management.
Key Features:
Archiving-
Data Archiving is the process where in, huge volume of data is deleted from the system which has not been used for a long time. SAP recommends this process of data archiving to clean up the SAP standard tables, to improve the system performance and usability which yield to shorter response time.
a) Cost reduction in terms of memory, hardware/disk and administration.
b) Ensures cost efficient system upgrades and migration.
c) Improved System performance due to shorter response time.
d) Reduction in the cost of maintenance and run of growing application infrastructure.
Snapshot-
Snapshots are archiving runs that are used to extract data, but not delete it, from the database. The system does not perform any checks aside from following the restrictions in the selection variant. Accordingly, these options let you write data to the archive from active business transactions that are not yet complete. To prevent data loss, snapshot runs cannot be used for deleting. A snapshot always creates redundant copies of data in the database. This function is especially useful for system shutdowns in connection with the Retention Warehouse scenario.
Data destruction-
Destruction of data in the database is carried out with an archiving write run and a subsequent delete run. In this process, temporary archive files are created and then deleted again at the end of the deletion phase. These files, together with the administration data that relate to them, are deleted automatically by the system. Technically, a run is classified as a destruction run when the DESTROY parameter is used.
Converting existing archive files for ILM-
The File Conversion function is provided to convert existing (Classical) archive files for use in an ILM environment. The system reads existing archive runs, compares the data objects they contain with the relevant attributes stored in IRM, and sorts the objects into new archive files according to the IRM rules.
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