Overview

The protection and retention of data sets is determined by the expiration date stored in the TMC. This expiration date is automatically updated every time a data set is created on a tape volume.

Expiration dates may be supplied by the following methods:

In the LABEL parameter of the DD statement
In the ACCODE parameter in the JCL
By the CA 1 Default Retention
By the CA 1 Default Abend Retention
From the Retention Data Set (processed by the TMSEXPDT program)