On 23Nov10:1258+1000, onefang wrote:

> On 2023-11-09 17:59:43, David L. Craig via Dng wrote:
> > On 23Nov09:1812+0100, Antony Stone wrote:
> >
> > > On Thursday 09 November 2023 at 18:07:22, David L. Craig via Dng wrote:
> > >
> > > > On 23Nov08:2208+1000, onefang wrote:
> > > > > Also I doubt my motherboard is hot swappable RAM.
> > > > > Never heard of that.
> > > >
> > > > Definitely this is available on IBM z16 mainframes.
> > > > When you're providing 40 TB and seven nines availablity,
> > > > that's a must-have feature.
> > >
> > > I must try asking my local PC supplier for one of those.
> > >
> > > I think my budget might stretch only to 24 TB RAM, though.
> >
> > Most PC vendors are not able to sell Z Series products.
> > Seven nines has to be a real need for the customers who
> > can make a profit despite the high TCO--guys like VISA
> > and Wall Street too-big-to-fail types. Note Debian runs
> > in virtual machines on that HW (and Devuan--systemd is
> > not required by Z Architecture).
>
> My super desktop isn't quite THAT super.

I'll assume you know about Dave Plummer. He addresses the
Why Are Mainframes Still Sold question in ~25 mostly dense
minutes at https://www.youtube.com/watch?v=ouAG4vXFORc --
this is information with which all serious IT pros should
have some level of familiarity. I particularly like the
footage of testing for operational continuity during
earthquakes (as well as surviving shipment from the factory
to the customer).
--
<not cent from sell>
May the LORD God bless you exceedingly abundantly!

Dave_Craig______________________________________________
"So the universe is not quite as you thought it was.
You'd better rearrange your beliefs, then.
Because you certainly can't rearrange the universe."
__--from_Nightfall_by_Asimov/Silverberg_________________