Special files for the Medium Changer device

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After the driver is installed and a medium changer device is configured and made available for use, access to the robotic device is provided through the IBMchanger special file in the/dev directory. The asterisk (*) represents a number that is assigned to a particular device, such as IBMchanger0. The term IBMchanger is used for a SCSI medium changer device. The IBMchanger* special file provides a path for issuing commands to control the medium changer robotic device.

The file descriptor that results from opening the IBMchanger special file does not support the following operations.
  • Read
  • Write
  • Open in Append mode
  • Commands that are designed for a tape device