"While the thousand PC's described above are almost certainly
overkill for 40,000 typical websites, I chose that high number for
a reason; the cost of a fully-configured S/390 is roughly that of a
thousand inexpensive Intel systems. That is the price/performance
standard that the mainframe would have to meet to be cost-effective
in this large, but simple, example scenario."
"(Note that this is not a practical configuration; for the
workload described above, one or two hundred PC servers would be
adequate and would cost a fraction of the price of a single
mainframe. To handle the load comparably, of course, several
mainframes would be necessary.)"
"More realistically, if your shop has an S/390 with some
excess capacity, you can use it now rather than letting it sit
idle. Then, as your OS/390 workload grows, you can migrate the
Linux workload to another system. Due to the large increments
in which mainframe capacity is purchased, and because systems must
be configured for the rare, peak loads, most mainframe shops have a
lot of free processor cycles. That unused capacity, along with the
fact that nearly any Internet service can run happily under Linux,
produces a scenario where the Blue Suit and the Tux go well
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