[Info-vax] OpenVMS on x86 and Virtual Machines -- An Observation

[Dave Froble]

On 1/30/2019 1:57 PM, Phillip Helbig (undress to reply) wrote:
> In article <8f9a7157-ac0c-4471-a725-ce52ffa4a86c at googlegroups.com>,
> gezelter at rlgsc.com writes:
>
>> Traditionally, OpenVMS has been run on dedicated hardware.
>
>> With the advent of OpenVMS on x86, there is an increasing discussion of
>> running OpenVMS x86 on various virtual machine hypervisors
>
> Since VMS will soon run natively on x86, what is the motivation to run
> it on some sort of emulator?
>

Well, as mentioned, it depends.

Don't confuse emulation with a VM.  At least the way I understand 
things, if VMS runs on x86 as a VM guest, it's not emulation.

For some there may be no reason to do so.

Now, what if the only HW supported is some rather high end stuff, and 
expensive.  A casual user, a developer, and such, could have a VMS 
environment with less expensive HW and a VM.

Only got one system, but want 2 or more instances of VMS running? 
Multiple guests in a VM.

Perhaps as many reasons as there are participants in c.o.v.

Since you're into running a cluster, whether or not you need one, how 
about 2 systems, with one running a second guest to allow a 3 node 
cluster?  Though, that's a rather poor idea, since if you lose the 
system with 2 guests, you lose quorum, at a minimum.

How about a hypothetical VM that provides a whole bunch of security?

-- 
David Froble                       Tel: 724-529-0450
Dave Froble Enterprises, Inc.      E-Mail: davef at tsoft-inc.com
DFE Ultralights, Inc.
170 Grimplin Road
Vanderbilt, PA  15486