and DEC minicomputers, in cooperation with other COMECON countries, was more practical than pursuing original designs. Cloning of DEC designs began in 1974, under the name of SM-EVM (Cyrillic:СМ ЭВМ). СМ ЭВМ is an acronym for 'Система Малых электронно-вычислительных машин' which is Russian for 'System of Small electronic computing machines'. As happened with ES EVM mainframes based on the System/360 architecture, the Russians and their allies sometimes significantly modified Western designs, and therefore not every SM-EVM machine is compatible with DEC offerings of the time.