Latest Entries

Mainframe Virtual Security

Enterprises using IBM’s premier Operating System (OS) for S/390 mainframes, z/OS, may have a false sense of confidence regarding the vulnerability of corporate assets. The protection offered by widely used security products can often be circumvented as a result of loopholes in other add-on software. Many such systems are frequently not nearly as resistant to security penetration as corporate management has been led to believe. New inspection, certification, and verification techniques must be implemented before MVS-based systems can be safely used for e-commerce and as a secure repository…

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Opening Up zStorage

For many years, storage and storage interfaces could have been viewed as the Rodney Dangerfield of the IT infrastrure. It “didn’t get no respect.” Long considered only as a cost — measured by dollar per-megabyte ($/MB) and, more recently, as dollar per-gigabyte ($/GB) — storage has only recently (coinciding with the growth of e-commerce) been seen as cool and trendy…

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For almost four decades, IBM has built upon its mainframe platform’s strengths. Through multiple hardware generations, thousands of companies worldwide have run strategic operations on “blue” hardware. Starting with the System/360, announced in 1964, through the System/370 in the 1970s, System/370-XA and -ESA in the 1980s, and then the System/390 in the 1990s, the IBM mainframe stood apart from the crowd for its Reliability, Availability and Serviceability (RAS) and power…

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z/BOTTOM LINE:  MainFrames for Life?

Here in Dallas,Texas, dot.com wunderkind-cum-billionaire-cum-pro-basketball owner Mark Cuban is really enjoying himself. He took his unbridled passion for Indiana basketball and decided that here in Texas he just had to be able to listen to the Indiana games, live. That passion turned into the founding of the company Broadcast.com and enabled the development of the technology to allow radio and other live audio to be broadcast over the Internet. A few years later, Yahoo! decided they couldn’t live without that technology and paid over $6 billion for the company. Cuban was only able to pocket about $1.6 billion but now he could turn his attention to what he really loved. He bought Dallas’ pro-basketball team, the Dallas Mavericks…

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A primary objective of ESCON, upon its introduction in 1990, was to simplify configuration management. At that time, several hundred MIPS and, at most, a few terabytes of storage typified even the largest MVS configurations. Before ESCON, 4.5MB/sec. copper bus and tag cables connected these resources. The cables weighed about onehalf pound per linear foot and maximum lengths were limited to 400 feet…

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