OS/VS2 (SVS)

Operating System/Virtual Storage 2 (Single Virtual Storage)
DeveloperIBM
Written inAssembler (XF), PL/S (nee BSL)
OS familyOS/360 and successors
Source modelOpen
Initial release1972; 52 years ago (1972)
Latest releaseRelease 1.7
Marketing targetIBM mainframe computers
PlatformsS/370
Licensenone
Preceded byOS/360
Succeeded byOS/VS2 (MVS)

Single Virtual Storage (SVS)[1][2] refers to Release 1 of Operating System/Virtual Storage 2 (OS/VS2); it is the successor system to the MVT[note 1] option of Operating System/360. OS/VS2 (SVS) was a stopgap measure pending the availability of MVS, although IBM provided support and enhancements to SVS long after shipping MVS.

SVS provides a single 16MiB address space which is shared by all tasks in the system, regardless of the size of physical memory.

  1. ^ Cite error: The named reference GC20-1753 was invoked but never defined (see the help page).
  2. ^ Cite error: The named reference GC28-0600 was invoked but never defined (see the help page).


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