[Info-vax] VMS port to x86

[John Wallace]

On Mar 26, 9:54 pm, Jerry Eckert <je... at virtual-vax-alpha.com> wrote:
> On Mar 26, 1:32 pm, John Wallace <johnwalla... at yahoo.co.uk> wrote:
>
>
>
> > On Mar 26, 5:20 pm, Jerry Eckert <je... at virtual-vax-alpha.com> wrote:
>
> > > On Mar 25, 3:48 am, John Wallace <johnwalla... at yahoo.co.uk> wrote:
>
> > > > In a commercial setup rather than hobbyist setup, a far greater
> > > > concern than using one of the multiple cores [often unnecessarily]
> > > > provided in many modern Window boxes would likely be the reliability
> > > > and availability of the underlying OS in comparison with the
> > > > reliability and availability which led to the choice (and retention)
> > > > of VMS.
>
> > > If one dedicates a box to the emulation applications, which is the
> > > recommendation of the vendors, many of the Windows services can be
> > > disabled.  This provides a significant improvement in the reliability
> > > of the underlying OS. Since Windows network connectivity is for
> > > management only, in most cases it should be possible to isolate it
> > > from general network traffic, reducing exposure to the network
> > > security vulnerabilities.
>
> > > Another option is not to run the emulator under Windows.  vtAlpha's
> > > bare metalapproach, which is a bundled Linux kernel, works well
> > > because the underlying OS is shipped stripped down and tested with the
> > > application; there is no issue with OS upgrades applied on-site
> > > introducing incompatabilities.
>
> > "vtAlpha's bare metalapproach, which is a bundled Linux kernel"
>
> > Oh dear, not that silliness again. Not running Windows may be better
> > than running Windows, but running a Linux layer underneath the
> > emulator doesn't make it a "bare metal" emulator.
>
> > Why is it so difficult for IT people to be honest these days?
>
> > HYPErvisor. With the emphasis on the first four letters.- Hide quoted text -
>
> > - Show quoted text -
>
> The term "bare metal" is obviously from the user's perspective -- they
> provide the appropriate hardware, no OS required.
>
> Something has to provide the OS services: either the application can
> bundle an existing OS (or the necessary portions of an OS), or the
> application developers can write the code themselves.  The latter is
> obviously not feasible from either economic or reliability
> perspectives. Anyone who understands the technology should understand
> this.

The appropriate hardware for VMS is documented on the VMS SPD, isn't
it?