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The IBM 4300 series of computers were mid-range systems, various models of which were sold from 1979 through 1992. The systems, developed in Germany, were compatible with the System/370 instruction set. They featured modest electrical and cooling requirements, and thus did not require a data center environment. Each model number was available in various sub-models, such as the 4341 model 1 (or 4341-1) and 4341 model 2 (4341-2). The 4331 and 4341 ran the DOS/VSE operating system with FBA DASD. I/O used virtual addresses, unlike the System/370 architecture. 4300 systems were also capable of running the VM and MVS operating systems. The 4381-13 through 4381-24 (announced in 1987) were entry-level machines for the 370/XA architecture. They were positioned between the IBM 9370 and IBM 3090 in performance at the time of announcement. The 4381-3, 4381-14, 4381-24 and 4381-92 were dual-CPU models. Other models included 1, 2, 11, 12, 13, 21, 22, 23, 90 and 91. ==External links== *(IBM Archives: Mainframes product profiles ) 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「IBM 4300」の詳細全文を読む スポンサード リンク
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