No, these were single-platter setups, typically one fixed and one removable. I had one repair to look at that was basically a "Wang Word Processing System" or somesuch, and there was a mini that I tried (not very successfully) to deal with called a "GRI" -- the company was out of business when I came into the picture in 1985, and they had a guy who would come in ----------- The follow-on to the Diablo 31 was the 40. It was 5mb, 5440 style packs. I'm pretty sure the 11x17 docs are on bitsavers (I know that I've scanned it..) Any addtional information on the GRI 909 that isn't up on bitsavers already would be of interest to Bob Supnik, too..