About device drivers for persistent DSFs
The following are the device drivers required to use persistent DSFs:
The eschgr driver for robotic control.
The estape driver for tape drives.
For IBM tape drives, the atdd driver. NetBackup requires a minimum atdd driver level. See the Hardware Compatibility List for IBM atdd driver levels that are supported and atdd configuration information.
http://www.veritas.com/docs/TECH76495
Also see the Operating System Compatibility List for the minimum OS patch level that is required to run on HP-UX: