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z/VM

{{Short description|Computer operating system}}

{{Use dmy dates|date=December 2022}}

{{main article|VM (operating system)}}{{lowercase}}

{{Infobox OS

| name = z/VM

| logo = IBM logo.svg

| logo caption =

| logo size = 120px

| screenshot =

| caption = z/VM running CMS fullscreen

| developer = IBM

| family = VM family

| source_model = Closed source

| working_state = Current

| latest_release_version = 7.4

| latest_release_date = 20 September 2024{{Cite web |title=Introducing IBM z/VM 7.4 |date=6 August 2024 |url=https://www.vm.ibm.com/zvm740/}}

| kernel_type =

| license = Proprietary

| website = {{URL|www.ibm.com/products/zvm}}

}}

{{History of IBM mainframe operating systems|vm}}

z/VM is the current version in IBM's VM family of virtual machine operating systems. First released in October 2000,{{Cite web |title=IBM: VM 50th Anniversary |date=2 August 2022 |url=https://www.vm.ibm.com/history/50th/index.html}} z/VM remains in active use and development {{As of|2024|lc=on}}.{{cite book|url=https://www.vm.ibm.com/library/740pdfs/74628600.pdf|title=z/VM 7.4, General Information|publisher=IBM|date=2024}} It is directly based on technology and concepts dating back to the 1960s, particularly IBM's CP/CMS on the IBM System/360-67 (see article History of CP/CMS for historical details). z/VM runs on IBM's IBM Z family of computers and can support large numbers (thousands) of Linux virtual machines. (See Linux on IBM Z.)

On 16 September 2022, IBM released z/VM Version 7.3 which requires z/Architecture, implemented in IBM's EC12, BC12 and later models.{{Cite web |title=Announcement |date=13 September 2022 |url=https://www.vm.ibm.com/zvm730/announce.html}}

See also

References

{{FamilyTree CP/CMS|float=right}}

=Citations=

{{Reflist}}

; Primary CP/CMS sources:

{{Refbegin}}

  • R. J. Creasy, "[http://pages.cs.wisc.edu/~stjones/proj/vm_reading/ibmrd2505M.pdf The origin of the VM/370 time-sharing system]", IBM Journal of Research & Development, Vol. 25, No. 5 (September 1981), pp. 483–90, PDF
    ― perspective on CP/CMS and VM history by the CP-40 project lead, also a CTSS author
  • E.W. Pugh, L.R. Johnson, and John H. Palmer, IBM's 360 and early 370 systems, MIT Press, Cambridge MA and London, {{ISBN|0-262-16123-0}}
    ― extensive (819 pp.) treatment of IBM's offerings during this period; the limited coverage of CP/CMS in such a definitive work is telling
  • Melinda Varian, [http://www.leeandmelindavarian.com/Melinda/25paper.pdf VM and the VM community, past present, and future], SHARE 89 Sessions 9059–61, 1997;
    ― an outstanding source for CP/CMS and VM history
  • Bitsavers, [http://bitsavers.org/pdf/ibm/360/cp67/ Index of /pdf/ibm/360/cp67]

{{Refend}}

; Additional CP/CMS sources:

{{Refbegin}}

  • R. J. Adair, R. U. Bayles, L. W. Comeau and R. J. Creasy, A Virtual Machine System for the 360/40, IBM Corporation, Cambridge Scientific Center Report No. 320‐2007 (May 1966)
    ― a seminal paper describing implementation of the virtual machine concept, with descriptions of the customized CSC S/360-40 and the CP-40 design
  • International Business Machines Corporation, CP-67/CMS, Program 360D-05.2.005, IBM Program Information Department (June 1969)
    ― IBM's reference manual
  • R. A. Meyer and L. H. Seawright, "A virtual machine time-sharing system," IBM Systems Journal, Vol. 9, No. 3, pp. 199–218 (September 1970)
    ― describes the CP-67/CMS system, outlining features and applications
  • R. P. Parmelee, T. I. Peterson, C. C. Tillman, and D. J. Hatfield, "Virtual storage and virtual machine concepts," IBM Systems Journal, Vol. 11, No. 2 (June 1972)

{{Refend}}

; Background CP/CMS sources:

{{Refbegin}}

  • F. J. Corbató, et al., The Compatible Time-Sharing System, A Programmer’s Guide, M.I.T. Press, 1963
  • F. J. Corbató, M. Merwin-Daggett, and R. C. Daley, "An Experimental Time-sharing System," Proc. Spring Joint Computer Conference (AFIPS) 21, pp. 335–44 (1962) — description of CTSS
  • F. J. Corbató and V. A. Vyssotsky, "Introduction and Overview of the MULTICS System", Proc. Fall Joint Computer Conference (AFIPS) 27, pp. 185–96 (1965)
  • P. J. Denning, "Virtual Memory", Computing Surveys Vol. 2, pp. 153–89 (1970)
  • J. B. Dennis, "Segmentation and the Design of Multi-Programmed Computer Systems," JACM Vol. 12, pp. 589–602 (1965)
    ― virtual memory requirements for Project MAC, destined for GE 645
  • C. A. R. Hoare and R. H. Perrott, Eds., Operating Systems Techniques, Academic Press, Inc., New York (1972)
  • T. Kilburn, D. B. G. Edwards, M. J. Lanigan, and F. H. Sumner, "One-Level Storage System", IRE Trans. Electron. Computers EC-11, pp. 223–35 (1962)
    ― Manchester/Ferranti Atlas
  • R. A. Nelson, "Mapping Devices and the M44 Data Processing System," Research Report RC 1303, IBM Thomas J. Watson Research Center (1964)
    ― about the IBM M44/44X
  • R. P. Parmelee, T. I. Peterson, C. C. Tillman, and D. J. Hatfield, "Virtual Storage and Virtual Machine Concepts", IBM Systems Journal, Vol. 11, pp. 99–130 (1972)

{{Refend}}

; Additional on-line CP/CMS resources:

{{Refbegin}}

  • febcm.club.fr — [http://febcm.club.fr/english/information_technology/information_technology_3.htm Information Technology Timeline], 1964–74
  • www.multicians.org — Tom Van Vleck's short essay [http://www.multicians.org/thvv/360-67.html The IBM 360/67 and CP/CMS]
  • www.cap-lore.com — Norman Hardy's [http://cap-lore.com/Software/CP.html Short history of IBM's virtual machines]
  • www.cap-lore.com — Norman Hardy's [http://www.cap-lore.com/Hardware/Blaauw.html short description of the "Blaauw Box"]

{{Refend}}

External links

  • {{Official website|https://www.ibm.com/products/zvm}}
  • [http://www.vm.ibm.com/eval/ IBM z/VM Evaluation Edition] (free download)

{{Virtualization products}}

{{DEFAULTSORT:Z Vm}}

Category:Virtualization software

Category:IBM mainframe operating systems

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