Real-time Processing › OPEN for Output

OPEN for Output

For nonspecific output requests, any tape which does not meet specific requirements is immediately demounted, and a mount for a new scratch tape is requested. Eligibility for output access is determined entirely by information in the TMC. Any expiration date contained on the tape header label is ignored for CA 1 controlled volumes. An operator has no authority to make decisions as to which volumes can be written on, as with normal tape processing.

A tape volume is only considered eligible for scratch when the following two conditions are met:

• The expiration date in the TMC Volume record is not in the future.
• The status indicator in the TMC Volume record reflects the volume as scratch.

The CA 1 system option LAB allows external tape labels to be printed automatically for every OPEN of an output tape for the first file.