Be very careful: if you backup your system (HP-UX8.07)on a HP series 6400 model 2000 DAT drive on 90m DDS cassetes with fbackup you may be unable to read the tape with frecover. The program asks you for a second volume tape when you have
all your stuff in one tape. Other configurations should be tested.
HP says it is a known bug and has a patch for it (PHCO_1611)
The problem is that we were informed of this patch by HP support only line when we asked for help. I think that HP should notice all its customer of a problem of such gravity, especially if they have a ready solution for it.