Initial entry cost is quickly overcome by calculating Total Cost of Ownership (TCO). And you have to include *all* the time spent by *all* the people to maintain an Intel farm PLUS retraining, software and desktop support costs.

Les

John McKown wrote:
On Fri, 2010-01-15 at 20:13 -0600, Rich Smrcina wrote:
On 01/15/2010 08:01 PM, Dave Jones wrote:
Interesting article in "The Economist" about the return of the mainframe.....

The return of the mainframe Back in fashion

http://www.economist.com/businessfinance/displaystory.cfm?story_id=15276714

(watch for line wrap....)
Did the mainframe leave?


In terms of "mind share", then yes, it did leave. Many "pundits" said it
was moribund and obsolete. Now, what with "consolidation fever", the z
is showing that visualization on it is superior to Intel. It still has a
problem with initial entry cost vs. Intel. And let's not even talk about
z/OS vs. Linux.

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