Series nameof office computerof IBM corporation. With the computer which specializes in business processingsof enterprise, width of the efficiency by the model is wide, is introduced into the enterprise of various scales.OS /400 which is private OS whichthe same company developed is loaded. As for this, besides the fact that it is optimized in

processingrelational database management system it is essential to business processings, being strong, stability is high,there is a feature that in addition use and management are easy to do.Presently it is called in the series name, "eServer iSeries" by the reorganization of the brand which was done in 2000.