SGI Onyx, code named Eveready (deskside models) and Terminator (rackmount models), is a series of visualization systems designed and manufactured by SGI, introduced in 1993 and offered in two models, deskside and rackmount. The Onyx's basic system architecture is based on the SGI Challenge servers, but with the notable inclusion of graphics hardware. The Onyx was succeeded by the Onyx2 in 1996 and was discontinued on March 31, 1999.