Latest Entries

A previous article (Consolidation Drives Virtualization in Storage Networks, z/Journal December 2006/January 2007) examined how N_Port_ID Virtualization (NPIV) and virtual fabrics were used to increase utilization and decrease the switch port count in a storage network. This follow-up article shows how port counts can be reduced even more with virtual fabric tagging and how Inter-Fabric Routing increases the reach and addressability of fabrics. These powerful techniques increase the utilization of storage networks and provide more flexibility to the management of the storage network…

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To quell the growing concerns over data theft, many companies have switched from physical tape backup to disk-based solutions and data vaulting whereby data is transmitted to a Disaster Recovery (DR) site over a public or private network. While this alleviates the obvious worries over physical backup tapes, it presents some considerations for DR testing…

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Many enterprises have built their business reputations on their ability to consistently meet batch process Service Level Agreements (SLAs). In order to succeed in today’s speed-of-light IT environment, organizations know full well they must continually update their strategies to ensure the level of SLA performance their customers have every right to expect…

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Mainframe professionals know that accessing data stored on multiple systems across multiple platforms can drain an organization’s resources. Workflow efficiency can be compromised and costs can easily spiral out of control. Plus, manual data handling processes, multiple host connections, and access by unauthorized users pose potentially critical security risks…

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z/Bottom Line: IT IQ

As we energize 2007 with a full agenda and ideas for improving our own “technologykind,” I’m inviting a review on thoughts and plans. As the master of misspeak, Yogi Berra once said, “If you don’t know where you’re going, you can get there fast.” For each and every action that your IT organization plans for 2007, answer each of these questions—before you’re swept up by the mania of an acronym, architecture, “Magic Quadrant,” or any other “independent” voice influencing your investment and efforts —sort of an IT IQ test.

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Service-Oriented Architecture (SOA) continues to draw an increasing amount of attention from the enterprise IT community. The building blocks of an SOA are the services available through well-defined, standardized interfaces such as a Web services interface. As organizations strive to make their IT resources more effective, they’re realizing that achieving factorial savings and gains are possible only if they can make their existing programs available as services that can be reused…

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Centralized vs. distributed computing is one of the age-old pendulum swings of IT. Every few years, the smaller incremental acquisition costs and greater availability of local computing power cause a migration to distributed computing. Then, the lack of manageability and accountability when computing resources are under users’ direct control cause a swing back to a centralized paradigm…

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