6 Aug
2015
6 Aug
'15
8:08 p.m.
Is it really "bigger" than the MP3000 or is just a repackaged MP2000
where there
is no emulated I/O?
My MP3000 in addition to 2 72GB Raid-5 arrays has 2 ethernet interfaces,
2 parallel channel
attach points and 2 ESCON channel attach points.
I'm also jealous that you have a 3279 terminal. I've been looking for
3278s and/or 3279s
and haven't found any (except for the ridiculously priced 3278 on ebay
right now).
TTFN - Guy
On 8/6/15 7:11 PM, Mike Ross wrote:
If you want to see how it works on bigger iron,
here's a rare beast
indeed: my Application Starterpak 3000 - internal IBM codename
'Warthog'. A real S/390 in a half-height chassis. First video is a
power-up; let it play to the end and it segues into the next video,
IPLing the beast!
https://www.youtube.com/watch?v=ytMgyrZm87A
Cheers
Mike
On Fri, Aug 7, 2015 at 6:43 AM, Guy Sotomayor <ggs at shiresoft.com> wrote:
On 8/6/15 11:05 AM, Eric Christopherson wrote:
On Thu, Aug 6, 2015 at 12:41 PM, Guy Sotomayor
<ggs at shiresoft.com> wrote:
In various other S/390 and z/Series
machines, there is a laptop that is the
"service element" with
special S/W (now I think on Linux). On the MP3000, it is a single board
computer that is on what
looks like a big PCI card. By it's nature it is hooked into various parts
of the MP3000 system through
the various other things that sit on the PCI bus. Note that the PCI bus is
shared between the SBC
and the other parts of the MP3000.
If you don't fire up the system element software the OS/2 system would
appear as a somewhat
"normal" PC with a bunch of special device drivers.
There's a great diagram (too complicated to reproduce in ASCII art) that
illustrates all of the major
components in the MP3000. It's located in the IBM Redbook "Multiprise 3000
Technical Introduction".
It's Figure 1 on page 8 of the redbook. This is a really great introduction
on the MP3000.
TTFN - Guy
Back to the MP 3000. There are a number of CPUs
in the box. Two are the
most
obvious: the SBC running OS/2 and the actual S/390 CPU. However, there
is
another
S/390 CPU in the box as well. It is not visible (at least directly) to
S/W.
It is responsible
for providing the high performance I/O capabilities (like native disk
access
and making
them appear as conventional channel attached devices instead of RAID-5
SSA
drives).
The OS/2 SBC is there to emulate some of the slower devices (card
reader/punch,
direct attached 3270s, etc).
So the OS/2 computer is actually a component of the
mainframe's
control processor, not a separate PC?