> While 12 LPARs can share one IFL they cannot share any memory. Each LPAR
must have its own dedicated memory. That's the main reason to run z/VM, to
share memory. When
> I asked why Xen did not support System z, I was told that they didn't see
any point in competing with z/VM.
Xen is architecture
> How do you spell "Least expensive path"?
People: (N * (salary + 33% avg benefits, repeating for the life of the job))
increasing over the increase in workload on top of hardware costs.
ZVM: (proportional to workload increase), can be planned in advance with
justification, relatively static p
--Original Message-
From: Linux on 390 Port [mailto:LINUX-390@VM.MARIST.EDU] On Behalf Of
David Boyes
Sent: Thursday, April 07, 2011 9:13 AM
To: LINUX-390@VM.MARIST.EDU
Subject: Re: New User Linux on z10 question
> Yes you can have 12 LPARs sharing a single IFL. Whether it works very
>
> Yes you can have 12 LPARs sharing a single IFL. Whether it works very
> well
> is an "It Depends".
Well put. I'd pose it as:
With VM: can be handled by part of one person, part time dynamically with rare
purchases of real resources. Changes are seldom disruptive.
Without VM: requires inter
On Wed, Apr 6, 2011 at 8:14 PM, David Stuart wrote:
> Another point about PR/SM:
>
> The more LPARs you have, the higher the PR/SM 'overhead'. Which will affect
> all your LPARs, not just the Linux ones.
Not as if I were fighting on the wrong side of this, but I would
expect that most of the PR
Another point about PR/SM:
The more LPARs you have, the higher the PR/SM 'overhead'. Which will affect
all your LPARs, not just the Linux ones.
Dave
Dave Stuart
Prin. Info. Systems Support Analyst
County of Ventura, CA
805-662-6731
david.stu...@ventura.org>>> "Rob van der Heij" 4/6
2011/4/6 Przemyslaw Kupisz :
> Limit for z10 is 60 LPARs, so why just only 12 Linux images on 1 IFL?
> IMHO you can run 60 Linux images on 1 IFL.
This kind things happens when they deliver glossy brochures to people
living under a rock...:-)
For z/OS a popular LPAR configuration rule seems to be
Limit for z10 is 60 LPARs, so why just only 12 Linux images on 1 IFL?
IMHO you can run 60 Linux images on 1 IFL.
--
Przemyslaw Kupisz
http://www.linkedin.com/in/pkupisz
W dniu 06.04.2011 17:44, Alan Ackerman pisze:
> While 12 LPARs can share one IFL they cannot share any memory. Each LPAR must
>
delete this message.
-Original Message-
From: Linux on 390 Port [mailto:LINUX-390@VM.MARIST.EDU] On Behalf Of Mark Post
Sent: Wednesday, April 06, 2011 10:22 AM
To: LINUX-390@VM.MARIST.EDU
Subject: Re: New User Linux on z10 question
>>> On 4/6/2011 at 10:03 AM, Scott Rohli
While 12 LPARs can share one IFL they cannot share any memory. Each LPAR must
have its own dedicated memory. That's the main reason to run z/VM, to share
memory. When I asked why Xen did not support System z, I was told that they
didn't see any point in competing with z/VM.
Sent from my iPod
O
> Someone told me it is possible to run 12 Linux images on a single IFL
> without the use of z/VM.
> Is this true and how?
One thing you could do is define 12 logical partitions (LPAR). You can
define them IFL only, with shared
engines. Not that I'm advising to do so
with kind regards
Carste
>>> On 4/6/2011 at 09:44 AM, Billy Bingham
>>> wrote:
> You may be able to run 12 LPARs on a single IFL,
> but you can only run one instance of an OS on a
> LPAR without VM.
Well, there is KVM. Carsten Otte has spent a lot of time making that work on
System z. I don't know that anyone suppor
>>> On 4/6/2011 at 10:13 AM, Alan Altmark wrote:
> Maybe KVM can run 12 images on an IFL *doing something useful* and
> maybe it can't. Dunno...
I have no doubt that it can, but since it's not supported, even by IBM, I
wouldn't want to do it.
Mark Post
--
esday, April 06, 2011 9:39 AM
To: LINUX-390@VM.MARIST.EDU
Subject: New User Linux on z10 question
Someone told me it is possible to run 12 Linux images on a single IFL without
the use of z/VM.
Is this true and how?
The management around here heard this statement a while back and are now on a
quest f
>>> On 4/6/2011 at 10:03 AM, Scott Rohling wrote:
> oops - forgot about Xen.. which I believe can also virtualize? I know very
> little about it on z... so should probably not have said 'the only way' ;-)
Xen won't even compile on System z, let alone run. KVM is the other option for
System z
On Wed, Apr 6, 2011 at 9:39 AM, Hughes, Jim wrote:
> Someone told me it is possible to run 12 Linux images on a single IFL
> without the use of z/VM.
>
> Is this true and how?
>
Yes you can have 12 LPARs sharing a single IFL. Whether it works very well
is an "It Depends".
>
> The management ar
On Wednesday, 04/06/2011 at 09:41 EDT, "Hughes, Jim"
wrote:
> Someone told me it is possible to run 12 Linux images on a single IFL
> without the use of z/VM.
>
> Is this true and how?
>
> The management around here heard this statement a while back and are now
> on a quest for us to create an LPA
Nobody eats just one.
Find another one. Run VM. :)
Marcy
-Original Message-
From: Linux on 390 Port [mailto:LINUX-390@vm.marist.edu] On Behalf Of Scott
Rohling
Sent: Wednesday, April 06, 2011 6:58 AM
To: LINUX-390@vm.marist.edu
Subject: Re: [LINUX-390] New User Linux on z10 question
oops - forgot about Xen.. which I believe can also virtualize? I know very
little about it on z... so should probably not have said 'the only way' ;-)
Scott Rohling
On Wed, Apr 6, 2011 at 7:58 AM, Scott Rohling wrote:
> Multiple LPARs can share an IFL... but the only way to run multiple Linux
Multiple LPARs can share an IFL... but the only way to run multiple Linux
instances in a single LPAR is using z/VM to virtualize it.
If you're really talking about one lonely IFL - you'll likely want to
dedicate it and let z/VM manage the sharing on a single LPAR.
Scott Rohling
On Wed, Apr 6,
> -Original Message-
> From: Linux on 390 Port [mailto:LINUX-390@VM.MARIST.EDU] On
> Behalf Of Hughes, Jim
> Sent: Wednesday, April 06, 2011 8:39 AM
> To: LINUX-390@VM.MARIST.EDU
> Subject: New User Linux on z10 question
>
> Someone told me it is possible to
You may be able to run 12 LPARs on a single IFL,
but you can only run one instance of an OS on a
LPAR without VM.
Billy
On 6 Apr 2011 at 9:39, Hughes, Jim wrote:
> Someone told me it is possible to run 12 Linux images on a single IFL
> without the use of z/VM.
>
> Is this true and how?
>
> The
Someone told me it is possible to run 12 Linux images on a single IFL
without the use of z/VM.
Is this true and how?
The management around here heard this statement a while back and are now
on a quest for us to create an LPAR for the IFL to run multiple Linux
images on it. I must have missed the
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