On 23/4/22 14:04, kekronbekron wrote:
If you want to run Linux you can buy a 2 socket, 128 core enterprise x86 server
with 200TB of disk for less then a single zIIP.
This is the kind of nibble I like the most.
Thank you for this example!
zCX certainly has it's uses. For production middleware such as MQ
running zCX on z/OS for the concentrator makes perfect sense and will
save customers money. For the kind of applications I use Linux for such
as Elastic stacks, Kafka and other distributed software which are
designed to be scaled out I'm skeptical if zCX is a good fit. I'm happy
to be proved wrong.
- KB
------- Original Message -------
On Friday, April 22nd, 2022 at 6:32 AM, David Crayford <dcrayf...@gmail.com>
wrote:
On 22/4/22 03:35, Charles Mills wrote:
I am not a "corporate shop" guy but apparently "put up a VM LPAR" is a huge political
leap for many z/OS shops. The idea is facilitating "if we could just get one instance of Linux up under
z/OS we could show that to senior management and take it from there." Hence zCX.
Right, but zCX is not free. You have to pay a hardware license fee plus
assign zIIP, disk and storage resources. If you want to run Linux you
can buy a 2 socket, 128 core enterprise x86 server with 200TB of disk
for less then a single zIIP. 400Gbs ethernet is available in most data
centers now. Maybe that's the political leap. z/OS guys want to run
Linux on z Hardware because they own it. Most companies have
provisioning systems like Ansible where you can easily spin up a few
linux VMs.
Who remembers zBX? That died a death pretty quickly.
Charles
-----Original Message-----
From: IBM Mainframe Discussion List [mailto:IBM-MAIN@LISTSERV.UA.EDU] On Behalf
Of Dave Jones
Sent: Thursday, April 21, 2022 10:55 AM
To: IBM-MAIN@LISTSERV.UA.EDU
Subject: Re: Use of zCX
I agree with Robert's objections to zCX, and, frankly, If all a site wants to
do is run zLinux applications on an IBM z system, it is much simpler (and
perhaps cheaper) to just install z/VM on the box and then host as many Linux
guests as you want. No extra external tooling is needed; just use out of the
box management apps that are already available. Plus, the system programmers
have much greater and finer, control over the hardware resources (memory, CPU,
etc.) each zLinux guest is allowed to consume. And of course, z/VM and zLinux
run very well on the full speed IFL engines, no other specialty engines
required. Connect the z/VM and z/OS LPARs together by hyper-sockets and you're
good to go.
If I was an z/OS shop looking towards Linux, that's how I would proceed.
Thought and comments always welcome.
DJ
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