And there was an older DEC drive, I think it was the RK01, that was a rebadged Pertec. -- The RK01 was made by IOMEC (also sold by HP as 2870A) and was used in the RK8 (NOT the Omnibus RK8E) I have the drawings for the RK8, which will go up on bitsavers as soon as the RK8 manual arrives from NL.