The Tape Volume Accounting Interface › 21st Century Support

21st Century Support

Due to architectural limitations, the date normalization routines will not process dates beyond 2027 properly. Therefore, dates may only be between January 1, 1960 and December 31, 2027 for normalization logic. Tape catalog dates beyond 2027 are treated as the last day of 2027 for purposes of determining slot times.

CA DYNAM/TLMS does not keep the actual EXPDT values in its catalog, depending on the TLMS options in effect. However, TLMS always maintains the scratched date. If this date is zero, then the tape is active, otherwise, by definition, the field contains the date the tape was scratched. In order to calculate the slot time, CA use these field contents as follows:

• If it is non-zero, CA uses its contents directly.
• If it is zero, CA uses the value from the end date (control card).

Control card date format is MM/DD/YY. Anytime 'YY' is less than 60, it will be treated as if it were 20YY. For example, in the 21st century.