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Sounding Off About The Legacy Monster

Letters that disagree with Bob...

Learn From Past Mistakes
What worries me is that the old stuff works. What makes you think that the new stuff won't cost more to produce and also work very well besides?

From what I've seen, the younger programmers who disdain the old stuff seem to be repeating the mistakes we learned to avoid long ago. Whoever heard of memory buffer overflow being able to execute code out of the allocated area on legacy systems? This is the source of most of the damaging viruses in recent history. We learned to avoid this stuff in the '60s. And the code worked so well, they're still using it!
James T. Budelman
Member/Owner, Cerebroscape



One Size Doesn't Fit All
Calling legacy applications a "foul and dangerous monster" is provocative, but not entirely accurate. In the financial-services industry, the other name CTOs use for legacy is "the stuff that works."

It isn't a question of legacy versus cutting edge. The question financial-services firms and, more specifically for our client base, investment-management firms are asking is where can they wring out savings (operational, technology) and risk (investment, operational, compliance, vendor). The pertinent, if somewhat overused, goal is straight-through processing.

We believe the appropriate approach is to evaluate existing systems and operations in context of each firm's business drivers, and then create a strategy to solve the prioritized gaps with a "right-sized" systems-architecture strategy. That strategy may include replacing legacy applications with either new systems or service providers, or it may target incremental improvements.

There's no single answer that is right for every organization.

The studies deriding the spending on maintaining legacy applications confuse cause and effect. The effect of spending a larger percent to support "the stuff that works" is caused by reduced overall budgets. A cost-benefit analysis should support a strategic or tactical operations- or systems-improvement project, and it would account for any legacy maintenance savings in conjunction with a five-year projection of new license, subscription, maintenance, hardware, support, and implementation costs.
Robert Leaper
Managing Director, InvestTech Systems Consulting



Ease Of Administration
I have a very different perspective on what you term the "legacy monster." While the Wintel world has made great strides in reliability during the last few years, it's still a fact that no Windows system can touch some of the "legacy" systems for reliability and administrators per user. In fact, the improvement in the connectivity and usability of the AS/400-iSeries "legacy" platform far outweighs any reliability gains that Windows has made over the same period.

Consider this example: In a recent job, I had one customer who had more than 2,000 high-density (call-center) users accessing an enterprise application via a single large AS/400. Would you like to venture a guess as to how many administrators it took to cover all 2,000-plus enterprise users? One full time, and one part time. Seriously. That should give pause to anyone who has ever had to plan the budget for an IT department.

My point is that those who lament legacy systems most likely fall into one of two categories:

  • They simply have bad examples of software that happen to be running on "legacy" machines, or
  • They're not taking advantage of the great strides made by mainframe and iSeries-AS/400 technology.
  • In either case, for every example you could give me of a "legacy" AS/400 chewing up more than its share of IT resources, I could find you 20 cases that demonstrate exactly the opposite.
    Kevin Mawn
    Student



    Define Legacy
    I have more of a question. What exactly is a legacy system?

    We have some very talented people working on new systems that allow us to look at our business data in new ways. But once these systems go into production, guess what they are? Yup, legacy stuff. We have some long-lived systems that are very good, and we have some new "innovations" that are crap. The inverse is also true. My job requires that I make all the systems work together in a manner that allows us to do our business. I do not get paid to think up glib word play.
    David Fulton
    Senior Systems Programmer, Idaho Transportation Department



    Information Migration
    There's more to the problem than meets the eye for many industry segments now than before. Recent legislation, such as HIPAA and the Sarbanes-Oxley and Gramm-Leach-Bliley acts require certain industry segments to maintain information (and consistent accessibility to the information) for extended periods of time. So the question now becomes one of the need for successful migration of legacy data into newer systems.

    The focus needs to shift from proactive rather than reactive migration, making the move away from legacy systems and applications less painful and more readily achievable. There seems to be less consideration being given to emulation as an answer to this problem now, simply because it extends the need for individuals who are familiar with the legacy applications brought forward with the data. More and more, businesses are looking for solutions that include the ability to successfully convert/migrate the information in a non-application-dependent form.

    Additionally, organizations are finally looking at their business practices, especially records and information management, and beginning to ensure that records-retention policies are in place to maintain access to information pertinent to their operations for appropriate time frames. Some of these are dictated by laws, regulations, or statutes; others are just good business practices.

    Given the disasters related to failure to maintain sufficient records over the past two years (Enron, Tyco, Arthur Andersen, WorldCom, etc.) and the disastrous effects of not managing E-mail in the financial-services sector (Goldman Sachs, Morgan Stanley, Salomon Smith Barney, Deutsche Bank, etc.) along with the bad light cast on the FBI and CIA for not being able to gain access to information before the Sept. 11, 2001, attack (legacy systems and inability to access data within different offices of the same agency) I hope the focus is no longer on "slaying legacy monsters" but rather on capturing and proactively migrating legacy information.
    Larry Medina
    Senior Records Administrator



    Legacy Is No Monster
    We have no legacy monster to slay. Our organization's legacy applications on CICS and DB2 have the most uptime, fewest bugs, and lowest costs of our total base of applications. The Microsoft-based applications are far and away the most burdensome in both manpower and money.
    Tommy Jacobsen
    Technical Services Supervisor, Louisiana Department of Social Services



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