IBM System/360 Model 67: Difference between revisions

Revision as of 07:44, 21 June 2021

Revision as of 07:58, 27 October 2021

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}}{{rp|CPU 117–129}}</ref> This was largely fallout from a bitter and highly visible political battle within IBM over the merits of [[time-sharing]] versus [[batch processing]]. Initially at least, time-sharing lost.

However, IBM faced increasing customer demand for time-sharing and virtual memory capabilities. IBM also could not ignore the large number of S/360-67 time-sharing installations &ndash; including the new industry of [[time-sharing]] vendors, such as [[National CSS]]<ref>[http://www.computerhistory.org/corphist/documents/doc-42ae226a5a4a1.pdf "A technical history of National CSS"], Harold Feinleib, Computer History Museum (March 2005)</ref><ref>[http://www.computerhistory.org/corphist/documents/doc-422fd82791f26.pdf "From the very beginning…beginning... from my vantage point ―— early history of National CSS"], Dick Orenstein, Computer History Museum (January 2005)</ref> and [[Interactive Data Corporation]] (IDC),<ref>Varian, op. cit., pp. 24, Note 76 – IDC systems (quoting Dick Bayles)</ref> that were quickly achieving commercial success.

In 1972, IBM added virtual memory features to the S/370 series, a move seen by many as a vindication of work done on the S/360-67 project. The survival and success of IBM's [[VM (operating system)|VM]] family, and of virtualization technology in general, also owe much to the S/360-67.

In 2010, in the technical description of its latest mainframe, the [[IBM zEnterprise System|z196]], IBM stated that its software virtualization started with the System/360 model 67.<ref>[http://publibfp.dhe.ibm.com/epubs/pdf/sg247832.pdf SG24-7832-00: IBM zEnterprise System Technical Introduction], page 57: &ldquo;"Starting in 1967, IBM has continuously provided software virtualization in

its mainframe servers.&rdquo;"</ref>

== References ==