65273: Acronis Cyber Protect 15, Cyber Backup 12.5: Backup to tape fails with "The storage media is write protected" if tape is LTFS-formatted

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Last update: 03-11-2021


 1. Backup to tape fails with an error:

The storage media is write protected

2. The tape media is LTFS- formatted

3. When you check Windows Event log, a critical error is shown: "The LTFS file system encountered an error"


LTFS (Linear Tape File System) is not supported by Acronis Cyber Protect 15 or Acronis Cyber Backup 12.5: see p.14 in Limitations of tape device usage


Unmap or reformat LTFS media to generic data media.