IBM's System/390 computers are selling faster than any mainframe system ever has because the age of multimedia and e-commerce requires the crunching and shifting of vast amounts of data. This new edition closely examines the role large computers will play in the coming century. All the new hardware models and operating system products-VSE, MVS, VM, AIX, and Open Edition--now available for the S/390--are fully explained, as are such critical business...