Some ramblings on "free" zLinux.....  

z/VM is inexpensive relative to z/OS.  I see z/VM as becoming more strategic
in large zSeries sites between Linux on zSeries and CCL as a 3745
alternative.  If CCL is well received IBM may further invest in zSeries
specific solutions to z/OS problems intended to be deployed side by side on
Linux running in an LPAR or under z/VM. If they provided a turnkey
installation of Think Blue or some distribution with support bundled in and
configured to be easy to install and use for IBM supported applications it
would reduce some of the costs and overhead.  Leaving every site that wants
it to independently acquire SuSE or Red Hat is silly especially for those
that want to use it as an appliance OS to run CCL or future offerings.  

z/VM is priced on value units.  Dave Jones wrote a nice article recently The
ABCs of z/VM pricing

http://search390.techtarget.com/tip/1,289483,sid10_gci1085452,00.html 

Linux on zSeries is only free if you are just playing with it as a solo
systems programmer or a really light weight proof of concept.   For a real
proof of concept which we ran this year we licensed z/VM and purchased
IFL's.  Trial copies of SuSE Linux, DB2 UDB, WebSphere all had to be
arranged.  Systems programming and application programming support time in
excess of several hundred hours was invested.  While valuable lessons were
learned free it is not if you want to use it as more than a toy.   Despite
the fact we only used three guests during the proof of concept we ran it
under z/VM because we wanted to evaluate how bringing z/VM into our shop
would impact operations and support staff training needs and operational
procedures.  We knew that if we moved forward to production that LPAR would
not be enough.  

I think Linux on zSeries is not a toy and it is worth spending money on but
despite the fact that it is several years old many of us are still trying to
find the right way to use it for production.  I like the idea of being able
to deploy applications on z/OS and instead of using "middle tier" Wintel or
UNIX servers using Linux on the same zboxen.  Now if vendors including
Tivoli will just listen!

        Best Regards,

                Sam Knutson, GEICO
                Performance and Availability Management
                mailto:[EMAIL PROTECTED]
                (office)  301.986.3574

Dreams are free, but you get soaked on the connect time.


-----Original Message-----
>z/VM isn't cheap.

It depends on your definition of cheap.

I was at the z9 109 RoadShow in Toronto this past Tuesday, and IBM told us
that z/VM cost $25,000; an IFL cost $125,000 and zLINUX was free.

-teD
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