VM/370 origins

[Jan Steinman]

In article <6912 at brl-tgr.ARPA> Munck at MITRE-BEDFORD.ARPA writes:
>...CP/CMS made the jump to the /370... becoming VM/370, and also began to
>rival IBM's "main" operating system,... MVS.  I've heard rumors that pitched
>political battles between the two factions at high levels in IBM continue to
>the present day.

If you're a customer, IBM really pushes you toward MVS (stressing things like
RACF, TSO, etc.).  But guess what they use internally?  Of the five machines
in use at FSD (Manassas, VA) at the time I was there, only \one/ ran MVS, and
that was (curiously enough, when related to this discussion) for outside
contractors, because MVS/TSO was considered more \secure/!
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