Archive to Tape jobs fail with error 'Cannot access a closed file. The device is not Ready.' (4382872)

The failures are caused by tape device contention or timing issues, where the tape drive is still busy performing internal operations such as:

• Rewinding or unloading media
• Finalizing write operations
• Handling media or device state transitions

To prevent Archive to Tape job failures due to tape device readiness issues, apply the following best‑practice recommendations:

1. Run Archive to Tape jobs sequentially

   • Avoid scheduling multiple Archive to Tape jobs to run in parallel.
   • Ensure only one job accesses the tape drive at a time.

2. Allow sufficient delay between jobs

   • Configure adequate time gaps between Archive to Tape jobs so the tape device can complete rewind and finalization operations.

3. Verify tape device health

   • Use tape library or vendor management tools to confirm the drive and library are healthy and in a ready state.

4. Test with known‑good media

   • Use new or known‑good tapes to rule out media‑specific issues.

5. Review OS event logs

   • Check the Core server’s OS event logs around the failure time for tape, driver, or hardware‑related errors.

6. Update firmware and drivers

   • Ensure the tape drive firmware and OS‑level drivers are up to date and supported by the hardware vendor.

Following these steps typically resolves the issue and ensures reliable execution of Archive to Tape jobs without device readiness errors.