Yeah, but the slight difference here is that
the IBM mainframes run multiple copies of *OS*
in a single dedicated system (which may be made up
of multiple CPU's), under the control of a VM-style
supervisor OS.
The UNIX boxes simply split the CPU's and memory and
each OS runs independently of each other, not under
control of a supervisor.
What this means is that each of the multiple copies
of the OS in the mainframe can actually communicate
to the others (be they OS390 or UNIX or Linux or whatever)
via the shared memory and messaging in VM. The Unix boxes
have to use a file or comms for that.
Not new, BTW. VM/370 allowed us to run multiple OS/VS, DOS/VSE
and MVS back in the late 70's early 80's. They just extended
the concept to run also UNIX or Linux.
Cheers
Nuno Souto
[EMAIL PROTECTED]
http://www.users.bigpond.net.au/the_Den
----- Original Message -----
> Sun E10K's, Sequents, and some others I can't recall can do this.
>
> The Sun boxes are limited to Unix I believe.
>
> Sequents are Numa Q boxes on Intel, and can run Unix
> and NT simultaneously.
>
> Jared
>
> On Thursday 07 June 2001 10:51, Eric D. Pierce wrote:
> > was just talking to the campus IBM mainframe sa the other day, and
he
> > said that they run multiple instances (test/production) of the
usual
> > IBM mainframe *os* on the box, and that they run not only multiple
> > versions of the usual IBM mainframe os, but that they also have
red
> > hat linux running on the same box.
> >
> > just wondering, is it typical that non-mainframe unix boxes can
run
> > multiple instances/partitions of operating systems on one box?
> >
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Author: Nuno Souto
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