|
|
| Author |
Message |
cross
|
|
The Mainframe item
| 
Sep 17 00:20 UTC 2006 |
Mainframes have been around almost as long as computing. IBM, Tandem, Amdahl,
DEC; ask all your mainframe questions here. Want to know about IBM's TSO on
top of zOS (formerly MVS) or how to run zOS, MVS, and CMS on a single IBM
mainframe at the same time? Read on.
|
| 9 responses total. |
maus
|
|
response 1 of 9:
|
Jun 19 00:56 UTC 2007 |
Ok, so for work I am learning the beginnings of MVS. Not as a programmer
or operator, just as a user, but still, I can't believe how fucking
baroque and misfeatured that mess is. Is it too much to ask to have a
VFS of some sort? Why should I have to ask for specific tracks and
cylinders for my record-set? ISPF is friendly, but so slow and
option-limiting. BLAH! I cannot wait to be done with this silly
mandatory course so I can get back to UNIX and UNIX clones.
|
maus
|
|
response 2 of 9:
|
Jun 19 00:57 UTC 2007 |
That said, VM is spiffy.
|
nharmon
|
|
response 3 of 9:
|
Jun 19 01:23 UTC 2007 |
We run Unisys iron at my work, and as a result our environment is MCP. I
have not dealt with it very much but from what I have I can say it is a
real hunk of junk.
By the way, today's mainframes seem to just be a rack of one or three
servers, a disk array (maybe a SAN), some other equipment like a network
switch to connect it all. I remember commenting on how our vmware rack
was set up a lot like a mainframe.
|
twenex
|
|
response 4 of 9:
|
Jul 9 14:22 UTC 2007 |
I would like to be able to run VM on Hercules, an IBM mainframe simulator,
but no joy yet.
I h8 batch OSes though.
|
cross
|
|
response 5 of 9:
|
Jul 9 16:03 UTC 2007 |
VM isn't a batch OS; it's more like a hypervisor. I've run VM/370 under
Hercules before, but it was a long while ago. The typical OS that runs under
VM is CMS, the Converational Monitoring System (or something to that effect).
I used that a *really* long time ago on actual IBM mainframes, and it's not
a batch mode system, it's a timesharing system. Actually, CMS is a
single-user system that runs in a dedicated virtual machine.
|
twenex
|
|
response 6 of 9:
|
Jul 12 20:13 UTC 2007 |
I know what VM is, I was referring to MVS.
|
gull
|
|
response 7 of 9:
|
Aug 22 16:34 UTC 2007 |
Unisys, I'm convinced, only still exists due to vendor lock-in.
|
nharmon
|
|
response 8 of 9:
|
Aug 24 14:30 UTC 2007 |
Unisys still makes the best check image sorters, but otherwise I would
agree with David.
|
luser
|
|
response 9 of 9:
|
Jun 3 02:46 UTC 2018 |
I saw a classic mainfame clone's console at our university yard when I was
a 3rd or 4th former at elemantary school.
At the time of the item I've glanced at the nice EBDIC-art of company's IBM
login screen through 3270 emulator and a trivial login prompt via ssh.
Since then I've never communicated closer to a real mainframe than my credit
card.
|