On Wed, Aug 27, 2008 at 6:42 PM, Marcy Cortes
[EMAIL PROTECTED] wrote:
Please check out apar VM6 if you are diving deep into ISFC. I'd
feel better if you did :)
In a recent conversation I claimed that ISFC has always had stability
problems when building a mesh network. We've always been
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Lee Pretorius
IT Specialist
IBM S.A. (Pty) Ltd
Private Bag X9907
Sandton 2146
(W) 011-302-8020
(C) 082-570-4204
E-mail : [EMAIL PROTECTED]
Historically, there was a problem, and that was a required restriction
in those days. Modern CP does handle it correctly.
You lose a trivial amount of disk space by skipping cyl 0 consistently
(180K or so per volume). Even so, IMHO, it is still good practice to
avoid cyl 0 for all packs as a
Are there any guidelines for assigning virtual machine size to a 2nd
level VM system that will run a few Linux guests?
I am running a standard zVM 5.2 system with the usual service
machines. It is also running a ZOS guest with 500m virtual machine
size and another ZOS guest with 1024m
Hello Peter,
Your comment
Do you need every last CPU cycle for your production z/OS? LPAR is
better here.
I was told my some hardware and software people that the LPAR uses the
same amount of horsepower as would z/VM running the
Same machines. But the LPAR code just hides that
A 'few Linux guests' is a little vague. What are these guests going to
be doing, how important are they, how big are they?
Duane Weaver wrote:
Are there any guidelines for assigning virtual machine size to a 2nd
level VM system that will run a few Linux guests?
I am running a standard zVM
Are you saying you want to run a second level production z/VM? Why?
-Original Message-
From: The IBM z/VM Operating System [mailto:[EMAIL PROTECTED]
Behalf Of Duane Weaver
Sent: Thursday, August 28, 2008 9:52 AM
To: IBMVM@LISTSERV.UARK.EDU
Subject: VM size for a 2nd level VM
Are there
On Thu, 28 Aug 2008 01:54:51 -0400, Alan Altmark [EMAIL PROTECTED]
wrote:
...
Look in the archives of this listserver and you will find z/VM Developme
nt
stating that the volume label is safe from CP, even if cyl zero is
allocated as page or spool.
From a system management point of view,
Wrong discussion: LPAR is always there on modern machines. The choice thus is
LPAR only + z/OS guests or
LPAR + z/VM + z/OS guests
As far as CPU is concerned, z/VM would add a second virtualization
layer between z/OS and the real HW.
2008/8/28 Edward M. Martin [EMAIL PROTECTED]:
Linux guests under secondlevel z/VM would incurr high CPU overhead,
50% for example. The current z series supports 2 layers of
virtualization. LPAR uses the first layer, a z/VM guest the second.
These days a secondlevel z/VM is in fact 3'th level, what means
simulation.
2008/8/28 Huegel, Thomas
On Thursday, 08/28/2008 at 12:00 EDT, Kris Buelens
[EMAIL PROTECTED] wrote:
Linux guests under secondlevel z/VM would incurr high CPU overhead,
50% for example. The current z series supports 2 layers of
virtualization. LPAR uses the first layer, a z/VM guest the second.
These days a
On Thursday, 08/28/2008 at 11:55 EDT, Kris Buelens
[EMAIL PROTECTED] wrote:
Wrong discussion: LPAR is always there on modern machines. The choice
thus is
LPAR only + z/OS guests or
LPAR + z/VM + z/OS guests
As far as CPU is concerned, z/VM would add a second virtualization
layer
On Wednesday, 08/27/2008 at 07:48 EDT, Thomas Kern [EMAIL PROTECTED]
wrote:
If the VM stack and the linux stack were both connected to a VSWITCH,
would monitoring function in the physical switch see that clear text
data is being transfered from VM to linux?
No. Data is sent directly to the
Well here is the scoop. We acting as a DR site for another
university. The other university wants to bring in their zVM 5.3 and
run it under our zVM 5.2 system.
Our z800 is running in basic mode with 1 lpar, running the zVM 5.2.
At this point, we have no idea how few Linux servers they are
H, basic mode means no LPAR (i.e. VM owns the whole box).
Does the z800 REALLY have LPARs (i.e. one LPAR) defined, or is it
running in basic mode? It does make a difference, as you can see from
the SIE discussions.
-Mike
-Original Message-
From: The IBM z/VM Operating System
On Aug 28, 2008, at 10:54 AM, Duane Weaver wrote:
Well here is the scoop. We acting as a DR site for another
university. The other university wants to bring in their zVM 5.3 and
run it under our zVM 5.2 system.
Our z800 is running in basic mode with 1 lpar, running the zVM 5.2.
Shouldn't
At 01:54 PM 8/28/2008 -0400, Duane Weaver wrote:
Well here is the scoop. We acting as a DR site for another university.
Easy answer (chant it with me!): Disaster Recovery is not 'business
as usual.'
If they're in DR mode, they should just be happy to be up. Period.
Once they've recovered
Thanks to John Franciscovich for the link. I've IPL'd ZCMS and everythin
g
I have runs perfectly, however I don't have anything THAT big.
I do have a nice simple benchmark program somebody gave me back in the 80
's
(?). I hope it pastes in correctly here.
TITLE ' BENCHMARK VARIOUS
I thought z800's and above were LPAR only, no more basic mode.
Steve
-Original Message-
From: The IBM z/VM Operating System [mailto:[EMAIL PROTECTED] On
Behalf Of Michael Coffin
Sent: Thursday, August 28, 2008 2:00 PM
To: IBMVM@LISTSERV.UARK.EDU
Subject: Re: VM size for a 2nd level VM
I've googled this and haven't come up with anything definitive. What is
userid TSAFVM and/or what is it used for?
Thanks,
Steve
Linux under VM 5.2 under VM 5.3? Ditto, probably not a good idea. I've
tried this scenario for funnies and although it does work, Linux is very
slow that far down the food chain.
Steve
-Original Message-
From: The IBM z/VM Operating System [mailto:[EMAIL PROTECTED] On
Behalf Of Adam
The z890/z990 and higher are LPAR only.
Gentry, Stephen wrote:
I thought z800's and above were LPAR only, no more basic mode.
Steve
--
Rich Smrcina
VM Assist, Inc.
Phone: 414-491-6001
Ans Service: 360-715-2467
rich.smrcina at vmassist.com
http://www.linkedin.com/in/richsmrcina
Catch the
TSAF is Transparent Services Access Facility allows communication
between a collection of VM systems without having to use VTAM. A
collection can be up to 8 VM systems which all have TSAF up and running.
Programs can use APPC/VM to communicate. Each application thinks it is
just communicating
I've googled this and haven't come up with anything definitive.
What is userid TSAFVM and/or what is it used for?
It stands for Transparent Services Access Facility. My limited
understanding is that it is a way to connect multiple VM systems.
You could have a DB2 server on one VM and access
On Thursday, 08/28/2008 at 04:14 EDT, Bob Heerdink
[EMAIL PROTECTED] wrote:
Thanks to John Franciscovich for the link. I've IPL'd ZCMS and
everything
I have runs perfectly, however I don't have anything THAT big.
I do have a nice simple benchmark program somebody gave me back in the
80's
My 2066-0B1 (z800 family) is not running in LPAR mode, it is in ESA
mode.
-Mike
-Original Message-
From: The IBM z/VM Operating System [mailto:[EMAIL PROTECTED] On
Behalf Of Gentry, Stephen
Sent: Thursday, August 28, 2008 2:04 PM
To: IBMVM@LISTSERV.UARK.EDU
Subject: Re: VM size for a 2nd
Hello,
When I use the smsg smtp listmail all command,
I see some files that are in Resolving state:
From SMTP: 3286 @1 Resolving
* From SMTP: 3324 @1 Resolving
* From SMTP: 3378 @1
On Thursday, 08/28/2008 at 05:07 EDT, Gentry, Stephen
[EMAIL PROTECTED] wrote:
I?ve googled this and haven?t come up with anything definitive. What is
userid
TSAFVM and/or what is it used for?
Eric has the right of it. Is is the Old School way to access APPC/VM
(DB2, SFS, homegrown)
On Thursday, 08/28/2008 at 06:44 EDT, Alyce Austin
[EMAIL PROTECTED] wrote:
When I use the smsg smtp listmail all command,
I see some files that are in Resolving state:
From SMTP: 3286 @1 Resolving
* From SMTP: 3324 @
Bob - it takes real courage to put an assembler program out to the list!
David
From: The IBM z/VM Operating System on behalf of Bob Heerdink
Sent: Thu 8/28/2008 4:13 PM
To: IBMVM@LISTSERV.UARK.EDU
Subject: Re: [IBMVM] What is z/CMS - have ZCMS, need test program
The Court of Opinion and Assizes is now in Session.
Recall that we have two one-sheet (two pages, front back) tri-fold
installation summary cards: one for tape and one for DVD (1st and 2nd
level).
The questions:
1. Do these cards have value?
2. If they are valuable, are they usable in
On Aug 28, 2008, at 8:07 PM, Alan Altmark wrote:
The Court of Opinion and Assizes is now in Session.
Recall that we have two one-sheet (two pages, front back) tri-fold
installation summary cards: one for tape and one for DVD (1st and 2nd
level).
The questions:
1. Do these cards have value?
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