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Computing (FOLDOC) dictionary
Virtual Storage Extended
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operating system (VSE, formerly DOS/VSE) is a
similar to Multiple Virtual Storage (MVS).
VSE run jobs in partitions rather than address spaces, and
uses POWER for input/output rather than JES, but is
largely similar to MVS. Subsequent VSE/ESA releases gave
VSE the XA-370 channel architecture, 31-bit virtual and real
storage support, and data spaces. VSE is the IBM operating
system on one-third of installed IBM 4381s and a significant
proportion of IBM 9370s as well. It offers transactionprocessing and batch processing capabilities well beyond
Virtual Machine's current capabilities, and has a close
affinity with MVS.