On Thu, 21 Apr 2022 12:35:10 -0700, 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.
>
What incremental skill set is required for the respective alternatives?
I once inquired on another form whether a VM LPAR only for Linux
might be administered with no CMS skill required.  Alan Altmark
(IIRC) answered, neither practical nor desirable in view of the
superiority of the CMS-based tools.  does an OOTB Linux LPAR
change that?

>-----Original Message-----
>From: Dave Jones
>Sent: Thursday, April 21, 2022 10:55 AM
>
>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.

-- 
gil

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