HP UX info required

Hi all I need help with an HP/UX box. I don't know much about the thing except that it has two hard drives connected to the first (0) HPIB cable and a tape drive connected to the third cable (ID 3). Problem is that the existing software looks for the tape drive at /dev/rct/c7d0s2, and can't find it. The device entry c7d0s2 has a major number 7 and a minor number 0x400702. Am I correct in thinking that the minor number related to the HPIB address in some way, because I expect the tape drive to be 4.2.3.0.0.0. Please bear with me, this is the first time in my life I've seen an HP/UX box, so I'm pretty clueless. What do I need to find out about the box to make the tape drive work? Thanks Wouter PS: Anybody have Apollo 3500 hardware info for me? And where can I get a copy of Domain/OS, my one tape seems buggered?