Latest Entries

The realities of managing an IT center today are far more difficult than ever before.  From 1998 to 2000, the driving force behind the dot.coms, Year/2000, and enterprise system growth fueled the economy and budgets to soaring record highs. In fact, according to the management consulting firm, McKinsey & Co., the total IT expenditures during that time rose from $374 billion to $455 billion, a handsome 10 percent Compounded Annual Growth Rate (CAGR). The money was rolling and people were buying. In fact, they were buying large amounts of hardware to mask the more complex issues of managing the storage they already had, a far more onerous task…

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zSeries Speaks SCSI

The alluring promise of Linux on the mainframe is the ability to consolidate the tens, hundreds, or even thousands of discrete servers that have populated many machine rooms onto a single managed platform. While it is one thing to move the server function, the network, and the system management, a key piece is missing from this puzzle. What about all of the data on which these servers operated?…

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This article discusses the capacity of Logical Partitions (LPARs). Through various parameters, there are three different “capacities” that you can define for each LPAR on a zSeries Central Processing Complex (CPC): the number of logical processors, the processing weight, and the defined capacity. Setting these parameters is based on a combination of factors that are technical, political, and financial. Naturally, these factors are sometimes in conflict with one another. This article, which is based on personal research, describes the relationship between these parameters…

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Application programmers have an exciting new tool they can use to make user programs much easier to debug, therefore producing more durable programs. No longer must we depend on the DISPLAY statement in our COBOL programs or the “ready trace replacement” code as our tools of choice! IBM’s Debug Tool for VSE/ ESA brings an effective new resource to the VSE user community. After using and working with the…

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Mainframe SAN Security

Once considered the bastion of securely stored data, mainframe storage may not be as secure in the future as it has been in the past. With IBM’s decision to make FICON the recommended mainframe storage connection, mainframe storage managers can’t be faulted for suddenly feeling a little nervous…

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