About the Linux robotic control device files
For robotic devices, NetBackup uses the /dev/sgx device files, where x is a decimal number from 0 to 255. Linux should create the device files automatically. If the device files do not exist, see the Linux documentation for information about how to create them.
If you use device discovery, NetBackup looks for /dev/sgx robotic control device files. NetBackup discovers the robotic control device files (and hence the devices) automatically. Alternatively, if you add a robot manually in NetBackup, you must enter the pathname to the device file for that robotic device.