Tape error statistics

FDDRL compiles tape error statistics for the MTC used in DUMP-DISK, DUMP-PUBSET, RELOAD-DISK and RELOAD-PUBSET. At the end of each processing run, FDDRL reports how many errors (DATA ERRORS) occurred during processing of that particular volume.

Error messages during tape processing may not necessarily be due to faulty MTC. The errors could, for example, be caused by dirty read/write heads on the MTC device. In any event, an increased incidence of errors should certainly be investigated.

Only high-quality volumes (i.e. with less than 20 errors) should be used for save runs.