By Paul Rubens (ServerWatch)
Scan through IT news on any given day, and there's a good chance you'll find a story about some large organization or another replacing its IBM mainframe with servers running UNIX, Linux — and sometimes even Windows.
But here's something strange: Just before Christmas IBM announced Korea's largest credit card company, BC Card, had decided to go with an IBM System z mainframe to support its payment system, rather than alternative products from HP and Oracle.

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