Bertram Moshier wrote:

[...]

I'm wondering is it possible to have

1) Two Hercules systems on the same Windows system
running VM and
2) Connect these two CMS users on each VM system via
a CTCA between these two Hercules systems?

Also:

Is it possible to have these two VM and Hercules systems
on different physical Windows or Linux systems connected
by a CTCA?

Yes to both.

If so, how? What should I read?

Start here:

*


As far as documentation describing actual CTCA functionality goes (i.e. how it works and how to use it), there are the following IBM reference manuals:

* GA22-6983-00 IBM System-370 Special Feature Description - Channel-to-Channel Adapter
* SA22-7091-01 ESA-390 (CTCA) Channel-to-Channel Adapter for the System-360 and System-370 I-O Interface
* SA22-7203-00 ESA-390 ESCON Channel-to-Channel Adapter
* SB10-7034-04 System z - ESCON and FICON Channel-to-Channel Reference

You might be able to find them on the web somewhere if you search hard enough. If you can't find them though, contact me off list and I'll send you a copy. I have them all.

--
"Fish" (David B. Trout)
Software Development Laboratories

mail: fish@...

Hello!
I believe I originally proposed that sometime earlier. The idea was
that we'd each have our machines communicating over the Internet, and
sending and receiving files, and perhaps messages. Of course that one
is a bit more difficult. Oddly enough I first proposed this, well
before the Hobbyist DECNet project emerged, back when your wonderful
ideas on connecting the Hercules example to the outside world first
got launched.
-----
Gregg C Levine gregg.drwho8@...
"This signature fought the Time Wars, time and again."

On Thu, Nov 24, 2022 at 6:17 PM Fish Fish <david.b.trout@...> wrote:

Bertram Moshier wrote:

[...]

I'm wondering is it possible to have

1) Two Hercules systems on the same Windows system
running VM and
2) Connect these two CMS users on each VM system via
a CTCA between these two Hercules systems?

Also:

Is it possible to have these two VM and Hercules systems
on different physical Windows or Linux systems connected
by a CTCA?

Yes to both.

If so, how? What should I read?

Start here:

*


As far as documentation describing actual CTCA functionality goes (i.e. how it works and how to use it), there are the following IBM reference manuals:

* GA22-6983-00 IBM System-370 Special Feature Description - Channel-to-Channel Adapter
* SA22-7091-01 ESA-390 (CTCA) Channel-to-Channel Adapter for the System-360 and System-370 I-O Interface
* SA22-7203-00 ESA-390 ESCON Channel-to-Channel Adapter
* SB10-7034-04 System z - ESCON and FICON Channel-to-Channel Reference

You might be able to find them on the web somewhere if you search hard enough. If you can't find them though, contact me off list and I'll send you a copy. I have them all.

--
"Fish" (David B. Trout)
Software Development Laboratories

mail: fish@...

And we've gotten space allocated for the Rebel fleet which is moving
from Sullust.

Hello!
I'm not the fellow here who's surrounded by DEC gear, but, ah, it's a
family of networking protocols used by that family to, ah,
communicate. People could send files to other systems, and naturally
get them back. They could also make use of an email idea. However it's
biggest use happened to be to facilitate remote diagnosis of unhappy
DEC systems.

We also should expect a response from the fellow as soon as a member
of his staff understands the email.

Fish? What's that green thing in your bowl? Oh right, the pottery
whatsit that's usually found inside fish bowls.
-----
Gregg C Levine gregg.drwho8@...
"This signature fought the Time Wars, time and again."

On Fri, Nov 25, 2022 at 6:20 PM Bertram Moshier <herc370390vm@...> wrote:

Hey!

I'm not familiar with DECNet. I'm looking at the possibility of using CTCA to allow the VM Backup program to talk to other copies of itself.

The idea being offsite backup or copies of backups.

This wouldn't work in a mixed real iron and Hercules, from what I can tell.

Bertram / WB8ERT

On Fri, Nov 25, 2022, 17:08 Gregg Levine <gregg.drwho8@...> wrote:

Hello!
I believe I originally proposed that sometime earlier. The idea was
that we'd each have our machines communicating over the Internet, and
sending and receiving files, and perhaps messages. Of course that one
is a bit more difficult. Oddly enough I first proposed this, well
before the Hobbyist DECNet project emerged, back when your wonderful
ideas on connecting the Hercules example to the outside world first
got launched.
-----
Gregg C Levine gregg.drwho8@...
"This signature fought the Time Wars, time and again."

On Thu, Nov 24, 2022 at 6:17 PM Fish Fish <david.b.trout@...> wrote:

Bertram Moshier wrote:

[...]

I'm wondering is it possible to have

1) Two Hercules systems on the same Windows system
running VM and
2) Connect these two CMS users on each VM system via
a CTCA between these two Hercules systems?

Also:

Is it possible to have these two VM and Hercules systems
on different physical Windows or Linux systems connected
by a CTCA?

Yes to both.

If so, how? What should I read?

Start here:

*


As far as documentation describing actual CTCA functionality goes (i.e. how it works and how to use it), there are the following IBM reference manuals:

* GA22-6983-00 IBM System-370 Special Feature Description - Channel-to-Channel Adapter
* SA22-7091-01 ESA-390 (CTCA) Channel-to-Channel Adapter for the System-360 and System-370 I-O Interface
* SA22-7203-00 ESA-390 ESCON Channel-to-Channel Adapter
* SB10-7034-04 System z - ESCON and FICON Channel-to-Channel Reference

You might be able to find them on the web somewhere if you search hard enough. If you can't find them though, contact me off list and I'll send you a copy. I have them all.

--
"Fish" (David B. Trout)
Software Development Laboratories

mail: fish@...

And we've gotten space allocated for the Rebel fleet which is moving
from Sullust.

And we've gotten more space allocated for the Rebel fleet which is
moving from Sullust.

On Fri, Nov 25, 2022 at 05:37 PM, Gregg Levine wrote:

As far as documentation describing actual CTCA functionality goes (i.e. how it works and how to use it), there are the following IBM reference manuals:

* GA22-6983-00 IBM System-370 Special Feature Description - Channel-to-Channel Adapter
* SA22-7091-01 ESA-390 (CTCA) Channel-to-Channel Adapter for the System-360 and System-370 I-O Interface
* SA22-7203-00 ESA-390 ESCON Channel-to-Channel Adapter
* SB10-7034-04 System z - ESCON and FICON Channel-to-Channel Reference

There is a short intro to channel programming which can be found in the following, which might be of some help, too.

GC20-1667-1_intro360arch.pdf

?... Mark S.

On 11/25/22 18:36, Gregg Levine wrote:

I'm not the fellow here who's surrounded by DEC gear, but, ah, it's a
family of networking protocols used by that family to, ah,
communicate. People could send files to other systems, and naturally
get them back. They could also make use of an email idea.

Indeed they can. Great stuff!

However it's
biggest use happened to be to facilitate remote diagnosis of unhappy
DEC systems.

I assume you mean HECnet in particular, not DECnet in general, and are referring to the recent lengthy mailing list thread regarding debugging of some network stack implementation issues on TOPS-20.

We also should expect a response from the fellow as soon as a member
of his staff understands the email.

Well I am one such fellow, if the response you were expecting was from me!

-Dave

--
Dave McGuire, AK4HZ
New Kensington, PA

On Thu, Nov 24, 2022 at 01:18 PM, Bertram Moshier wrote:

Is it possible to have these two VM and Hercules systems on different physical Windows or Linux systems connected by a CTCA?

Yes.? It's called RSCS.? :-)

-ahd-

On Mon, Nov 28, 2022 at 02:58 PM, Bertram Moshier wrote:

Thanks!? I don't believe I can use RSCS for my VM Backup project.? It should lead me in the correct direction, though.

Honestly, I don't know why you want to ship backups between systems.? K.I.S.S. — Keep backups simple.

I personally don't even do backups from the guest OS instances.? On Linux, I just fully dump the host environments weekly and then take differential backups nightly; both go to an 512GB SD card. I prune such that I have monthly backups going back almost 2 years, weekly backups going back at least 90 days, and daily backups going back at least 30 days.

The downside of this I'd need to extract a minidisk or OS file from the host the disk image if I don't just restore the entire disk, but?c'est la vie …

(See??for my scripts)

On Mon, Nov 28, 2022 at 04:58 PM, Bertram Moshier wrote:

Hello Drew,

?

Thanks!? I don't believe I can use RSCS for my VM Backup project.? It should lead me in the correct direction, though.

You might want to look at VM/Pass-Through documentation. There's not much though, and it was an added cost item.



Concerning backups, there's more than one way to skin this cat, since we are running on laptops/desktops/servers with disks that are carved up to emulate/represent IBM DASD. There's no one right way, but there are lots of interesting ways.

?... Mark S.

开云体育

Bertram,
There is no CTCA code in the base free RSCS. Not sure what is on CE. I can't see any mods
Dave

开云体育

Try DMKCTC (real and virtual CTCA code), if it is in VM/CE.?

I know it was in VM/370 R3. The shop I was in ran multiple VMs (homegrown OS in them) talking to each other via CTC. Eventually they got another VM (still the homegrown OS) to talk to another REAL machine via real CTCA. I was an Application Programmer at the time (1976).

Tom Kern