As I found in the documentation for HP-UX, the robotic device is configured with the passthru driver, so the ADIC robot in this case should be seen as schgr CLAIMED device. Actually with the atdd driver for the IBM LTO drives, my robotic device is configured as acdd CLAIMED device. Is this a supported driver for VERITAS Netbackup 5.1? I did not find this driver in any list. In the documentation the LTO drives are claimed with atdd driver but each time the robotic device is used with schgr.