On Wednesday, 01/21/2009 at 05:10 EST, Mark Post <[email protected]> wrote:
> When I first joined Novell, I was surprised to learn that the world's
largest
> implementation was done all in LPARs.  From what I was told, that wasn't

> because of the dollar cost of z/VM, but the overhead.

Their estimate of "overhead" was based on z/VM 5.1 or z/VM 5.2.  As many
here know, those were not the best releases on which to build Very Large
Deployments.  They have been encouraged to reevaluate a newer z/VM, but
once you've sunk the initial expense to build an infrastructure and
process to handle so many LPARs and machines and are happy with the
results, it is indeed difficult to justify a change.

Perhaps their infrastructure, financial and personnel constraints did not
match that of a typical company (whatever THAT is).  "Don't spare the
horses."

Alan Altmark
z/VM Development
IBM Endicott

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