Use the Real-time Expiration feature to apply your retention rules specified in the Retention Data Set (RDS) during tape creation, when the file is closed.
Business Value:
The Real-time Expiration feature reduces the number of maintenance utilities that you need to run daily.
In sites where CA Vtape is also in use, the expiration information is immediately available to be used to place virtual volumes in the correct subgroup for externalization processing. This integration is unique to CA Vtape and CA 1 or CA TLMS.
Additional Considerations:
Sites that set up a Retention Data Set (RDS) to supply or override tape expiration dates can process the retention rules in the following ways:
The TMSEXPDT utility processes the entire TMC sequentially, updates eligible records with EXPDTs from matching RDS rules, and creates reports.
Real-time Expiration performs the same checks as TMSEXPDT does. If the tape is going through abend close, the abend status is considered when searching the RDS rules. If the updated expiration date is higher than all previous dates on the tape, it is propagated to the volume record to help ensure the highest requested retention. The resulting expiration dates are the same as the dates assigned by TMSEXPDT, but the final retention is established during tape creation and is immediately available to users and to any product interfaces.
Real-time Expiration can be easily implemented by restarting CA 1 with a TMSRDS DD statement in the TMSINIT procedure, pointing to the RDS data set. In multi-system environments, the feature should be implemented on all systems sharing the TMC, and all systems should use the same retention data set.
Note: For more information about the Real-time Expiration feature, see the Utilities and Reports Reference Guide.
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