System z: Dinosaur or Phoenix?

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 ‚Äî and sometimes even Windows.
It’s a reminder that smaller-scale servers ‚Äî even Windows servers ‚Äî can do far more than was possible in the past, at price points very different from mainframes. UNIX, Linux and Windows servers have confidently been making incursions into Big Iron Country for quite some time.
That’s not to suggest the mainframe’s days are numbered ‚Äî but sales of IBM’s System z mainframes have certainly suffered markedly during the recession as organizations look to less-expensive commodity hardware alternatives…