Tim,

Your statement " VOS3 does not run on today's IBM Z machines" appears to be at 
odds with the 2017 IBM announcement.

http://www-03.ibm.com/press/us/en/pressrelease/52454.wss

The Hitachi AP series is the IBM z14.

Ron Hawkins
Director, Ipsicsopt Pty Ltd (ACN: 627 705 971) | m: +61 400029610 | h: +61 
387399252 | email: [email protected]

-----Original Message-----
From: IBM Mainframe Discussion List <[email protected]> On Behalf Of 
Timothy Sipples
Sent: Friday, 25 January 2019 18:45
To: [email protected]
Subject: Re: [IBM-MAIN] how many OSes run on IBMz

Parwez Hamid wrote:
>IBM itself doesn't distribute LINUX.

IBM doesn't distribute Linux yet. If IBM's pending acquisition of Red Hat 
completes, that'll change.

>Hitachi’s operating system, VOS

Hitachi's operating system is now called VOS3/XS in its latest iteration, 
introduced in 2018. VOS3/XS runs on the new Hitachi AP10000 model machines, 
also introduced in 2018. IBM is Hitachi's system technology partner, but
VOS3 does not run on today's IBM Z machines. VOS3 runs on Hitachi's machines. 
The latest Hitachi AP10000 is a "cousin" to the IBM z14 ZR1.

Historically, for a couple IBM Z model cycles and with a little adaptation,
VOS3 did run quite well on IBM Z machines. It was VOS3/LS back then, if I'm 
correct about vintages. Hitachi built the IBM z800 model for the global market 
(including Japan) using IBM processors, and Hitachi also built a variant of 
that model for Japan to run VOS3/LS, the VOS3 update introduced in 2002 that 
incorporated a very little bit of 64-bit-ness. I think there was enough VOS3/LS 
compatibility in the IBM z800, z890, and z9BC (those three models as I recall) 
so that it'd run well on the IBM machines, with a bit of adjustment.

Bernd Oppolzer wrote:
>MUSIC/SP, but I don't know

MUSIC/SP would have some problems starting up on an IBM z14 machine, but I 
suspect it'd still run under z/VM with SET MACH ESA. It'd have to be MUSIC/SP 
6.1 or higher, and you would need permission from its copyright holders.

--------------------------------------------------------------------------------------------------------
Timothy Sipples
IT Architect Executive, Industry Solutions, IBM Z & LinuxONE
E-Mail: [email protected]

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