z/VM is the current version in IBM's
VM family of
virtual machineoperating systems. z/VM was first released in October 2000[2] and remains in active use and development as of 2022[update]. It is directly based on technology and concepts dating back to the 1960s, with 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. It can be used to 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.[3]
E.W. Pugh, L.R. Johnson, and John H. Palmer, IBM's 360 and early 370 systems, MIT Press, Cambridge MA and London,
ISBN0-262-16123-0 ― extensive (819 pp.) treatment of IBM's offerings during this period; the limited coverage of
CP/CMS in such a definitive work is telling
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)
Background CP/CMS sources
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. 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)