Virtual Storage Extended
<operating system> (VSE, formerly DOS/VSE) is a multitasking
, IBM 370
-architected operating system
similar to Multiple Virtual Storage
VSE run jobs in partitions rather than address spaces, and uses POWER
for input/output rather than JES
, but is largely similar to MVS.
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 transaction processing and batch processing
capabilities well beyond Virtual Machine
's current capabilities, and has a close affinity with MVS.