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Re: OT: multiple os partitions? / RE: SUMMARY: Thanks everyone - tru64

From: Nuno Souto <nsouto_at_nsw.bigpond.net.au>
Date: Fri, 08 Jun 2001 04:33:43 -0700
Message-ID: <F001.00321F1E.20010608041658@fatcity.com>

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
nsouto_at_nsw.bigpond.net.au
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
  INET: nsouto_at_nsw.bigpond.net.au

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Received on Fri Jun 08 2001 - 06:33:43 CDT

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