On Wed, 3 May 2006 04:37:03 -0600, Timothy Sipples 
<[EMAIL PROTECTED]> wrote:

>>Somewhere at home I have an IBM poster that says "VM Soars with 20,000
>>licenses". This was probably some time in the early to mid 1990s, and has
>>doubtless dropped hugely since then.
>
>Why would it drop hugely?
>

Since the mid 90's?  Ever hear of PR/SM?  ;-)   

>The vast majority of mainframe Linux customers run under z/VM. (It's all
>but mandatory, for functional and operational reasons, when you have
>plural Linux instances.) Mainframe Linux is growing very rapidly. Ergo...
>

Things ain't what they used to be.  In the mid-late 80's and early 90s I
knew lots of shops that still had VM around.  Some just using it for 
things like email (PROFs), office vision, etc., others ran it for 
consolidations / multiple guest MVS images prior to having boxes that
supported PR/SM, and others ran VSE under VM.  Most of that all went
away as we moved to Y2K.   Yes, there are now new licences because of 
Linux, but based on just who and what I know, I don't think the number
of VM licenses has gone up as much as it dropped (but then again,
the number of "MVS" licenses has dropped also for reasons already
discussed). Only the larger shops seemed to have bought into Linux on 
Z and most of those I know are still in POC.

Mark
--
Mark Zelden
Sr. Software and Systems Architect - z/OS Team Lead
Zurich North America / Farmers Insurance Group
mailto: [EMAIL PROTECTED]
Systems Programming expert at http://expertanswercenter.com/
Mark's MVS Utilities: http://home.flash.net/~mzelden/mvsutil.html
Mark

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