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.