Latest Entries

While working on my next column, the prospect of reviewing the SLES 11 release developed into a significantly larger project than I had anticipated. Therefore, instead of my usual “Linux on System z” column in this issue, I present you with this article, which details the many features of SUSE Linux Enterprise Server 11 (SLES 11)…

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Monte Bauman is an IBM-certified System z IT specialist who is applying his more than 25 years of experience in the IT industry to help customers leverage IBM’s new specialty processors. In the following interview, he shares insights on how IBM can help customers choose the optimal consolidation or virtualization platform to reduce IT costs…

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Tuning VSAM CI Size and Free Space

The bulk of today’s information is still kept in Virtual Storage Access Method (VSAM) files. VSAM endures because of its simplicity, maturity, and to be honest, inertia. However, even with the new technology and techniques available today, it’s important to tune a VSAM data set’s free space attributes for performance. (In this article, which focuses on Key-Sequenced Datasets [KSDS], the words data set and cluster are used interchangeably.)…

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A Compressed View on Mainframe Deduplication

Deduplication has been a buzzword in the storage industry for many years now. All storage vendors agree that it’s valuable and each has versions of the technology available, with roadmaps for additional future products that leverage deduplication capabilities. Mainframe operators have learned to be wary about industry hype and have the discipline to stick to what truly works, is manageable, and solves real business issues…

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Most data centers today have one of the models of IBM’s System z processor technology. Many customers have been able to take advantage of specialty processors to facilitate their sysplex environments with Integrated Coupling Facilities (ICFs), and consolidate distributed workloads on a mainframe platform with Integrated Facilities for Linux (IFLs). Now, with z9 and z10 processors, there are opportunities to reduce software license costs with System z Integrated Information Processors (zIIPs) and System z Application Assist Processors (zAAPs). This article examines some of the basic concepts of the technology, the considerations for successful implementation, and exploiters of these processors…

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