SAP Note 24000 - Tape always ejects on AT&T 3416 Server Machine

Symptom:

Tape always ejects after insertion in Wang DAT Tape drive in AT&T 3416.

Cause and prerequisites

Tape drive does not support the use of 120 meter / 4MM DAT Tapes.

Solution
Use 90 meter or 60 meter 4mm dat tapes.