CNet: IBM overhauls mainframe operating system

"IBM on Monday will release z/OS, its z900 mainframe operating system upgraded to take advantage of the new model's 64-bit design."

"z/OS is a major overhaul of the basic software that runs the mainframe, a traditional computing design with a decades-old lineage. z/OS, along with Linux, are the two major software initiatives designed to restore the mainframe's relevance in an age when Unix servers from companies such as Sun Microsystems have stolen most of the high-end server momentum...."

"The new operating system also has better support for Sun's Java software and Linux, two technologies that make writing software for a mainframe easier for modern programmers. And IBM promises z/OS makes it easier to set up and administer a mainframe, a significant change in light of how expensive the mainframes are to run."

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