Operating Systems

LINUX For zSeries: Expectations vs. Reality

It has been four years since IBM Distinguished Engineer Dr. Karl-Heinz Strassemeyer talked at length about running Linux on the mainframe at the World Alliance of VM and VSE (WAVV) Conference in Fort Mitchell, KY. Linux on the mainframe has come a long way since then. There were—and still are—many high expectations of the platform, which have been tempered somewhat by a big dose of reality in the form of deployment successes and failures. It is easy to talk about the successes, which range from the miniscule to the downright glorious. However, it isn’t as easy to talk about the failures, which at times threaten to cast a pall on the platform and spawn fear and doubt for the new Linux on zSeries technology…

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The Event-Driven Enterprise

Organizations trying to become an agile, real-time enterprise often don’t notice that most of their critical business events lie dormant, locked within the safe confines of their complex operating systems. Event-driven architecture offers the promise of unlocking business potential in a world where business processes and their dependencies on business events occur without latency. Imagine a corporation where:…

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Like the mainframe, many people have predicted the death of SNA networking. This article examines the current state of SNA networking and applications, and explores the reasons why many enterprises choose to maintain their investment in SNA applications. We also examine some alternatives for transporting your SNA data across an IP network and help you determine the best way to do this…

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Once upon a time, it was easy. Twenty years ago, there were mainframe computers aimed at either business or scientific computing; there were departmental minicomputers; and there were microcomputers (or PCs) on people’s desktops. Everyone in the IT service organization knew which of these systems was which, which mattered, which needed 24x7 support, and which systems generated phone calls in the middle of the night…

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Are you having trouble making robust legacy applications talk to hot, new Web applications? Trying to manage business transactions with your partners when everyone is running their proprietary software on different platforms? Simple, flexible interoperability is the “Holy Grail” behind Web services. However, simplicity does not come without cost. This article will introduce you to Web services, provide an introduction to the key performance issues that characterize Web services-based applications, and help you begin to explore the possibilities for performance monitoring such complex, distributed applications…

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Building Systems Management Competency

In recent years, it has become more complicated to effectively manage technology. For the most part, improvements in individual hardware and software components have made it easier to very quickly put together large and complex systems. Yet, there are still major challenges with applications and platforms concerning integration, cost, complexity, and scalability. If companies are to achieve real success in meeting these challenges, they must address, or build upon, systems management competencies…

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It’s often a challenge to come up with an efficient architecture for running WebSphere applications on Linux for zSeries. Such systems consist of zSeries mainframes running VM and multiple Linux guests, each running WebSphere and customer applications. With all of these components involved, it gets a little complicated ensuring that everything works together optimally. This article provides the basics you need to get started as well as additional references…

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A Survival Guide for the Outsourcing Age

The loss of domestic IT jobs to offshore outsourcing is real, large, and will only get worse with time. According to several industry sources, last year, Indian outsourcers alone delivered more than $8 billion worth of IT services. When compared to U.S.- based salaries, which are two to three times as much, the math becomes clear—$16 to $24 billion worth of IT payrolls suddenly disappeared from U.S. and Western European domestic job markets. This situation is further aggravated by the growing number of offshore outsourcing providers in Russia, China, and a dozen more aspiring contenders in the world’s outsourcing game…

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Computing At The High End of The High End

Paul Mercurio, Mobil Travel Guide, Park Ridge, IL, will probably be the first CIO on his block to move to the IBM z990, the new high end of IBM’s biggest mainframe line. And, if everything works as expected, Mercurio and his customers, the travelers who pound away on the company’s Website, won’t notice a thing. “I guess it gives us more headroom than we could ever anticipate,” he notes…

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