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Date:      Sun, 9 Aug 1998 13:51:57 -0700 (PDT)
From:      Das Devaraj <das@netcom.com>
To:        Greg Lehey <grog@lemis.com>
Cc:        djv@bedford.net, Brandon Lockhart <brandon@engulf.net>, freebsd-chat@FreeBSD.ORG
Subject:   Re: FreeBSD
Message-ID:  <Pine.3.89.9808091311.A6903-0100000@netcom3>
In-Reply-To: <19980809104012.P14475@freebie.lemis.com>

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> On Saturday,  8 August 1998 at  7:12:01 -0400, CyberPeasant wrote:
> > The IBM mainframe OS, MVS, will run several OS's on
> > the same machine, simultaneously. Each user gets his own OS.

Actually this is partially true.  Any processor complex can be 
split into logical partions (LPAR) using PR/SM (Processor Resource/
Systems manager) and different OS' loaded onto them.  These partions
operate independently, except when they share the IO devices.  Each
user getting his/her OS is a stretch, since max is something like 10.


On Sun, 9 Aug 1998, Greg Lehey wrote:
> Nowadays the operating system is called OS/390, also known as UNIX 95.

The traditional OS is still MVS with a lot of qualifications after
it like MVS/ESA etc (actually they seem to use that and OS/390
interchangeably).  Then there is OpenEdition MVS, which is UNIX 95
compliant.  There is even an online shell called OShell, which can be
used to run UNIX commands from MVS.  For list of all commands see
http://ppdbooks.pok.ibm.com:80/cgi-bin/bookmgr/bookmgr.cmd/BOOKS/BPXA504/2.0


> I thought it was VM that ran multiple operating systems, not MVS.
Yes.

das

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