HP 98568A Installation Instruction page 268

HP 7941, 7942, 7945, 7946
Disk and Disk/Tape Drives
Description and Support
The HP 7941 and HP 7945 are Command Set 80 (CS/80) disks. The HP 7942
and HP 7946 contain a cartridge tape drive in addition to the disk drive.
HP 7941, 7942, 7945 and 7946
Series 300 HP-UX Operating System Support
on Release with Model
5.0 or later all Series 300 with boot
ROM Rev. A or later
6-42 Adding Mass Storage Devices