January 26, 2016
Migrating apps creates years of 3000 work
A double-handful of HP 3000s, 10 in all, remain on duty a few more years at a North American manufacturer with multiple sites. The systems are a mix of 9x9 and N-Class systems, waiting on a project to complete that will replace the 3000 apps with comparable software on Windows.
This app replacement is an example of one of the three flavors of migration discussed tomorrow (Jan. 27) in an MB Foster webinar. The first of a four-part series, Application Migrations / 3R's of Migration, starts at 2 PM Eastern US time.
At the North American manufacturer, according to systems engineer Dan Barnes, the Fortune 1000 company uses Lawinger Consulting for HP 3000 application management.
Our client has four remaining production locations using individual HP 3000s, plus one EDI server and one development server. All are awaiting conversion to a Wintel-based application alternative, which is still two-to-five years down the road for them. We have an additional 4 DR servers as backup to these systems.
There's nothing virtual about these systems. The servers are physical HP 3000s. "We will stay with these until completion of the application migration, then harvest," Barnes said.
Lawinger's support team does all the 3000 support remotely, unless specific activities require them to be onsite. The application "is being modified as a replacement to the shelf app," Barnes added.
Replacement plans for migration have some of the highest rates of success, even though the software must often be heavily modified to match existing business practices. Lift and shift proposals from the past decade, where tens to hundreds of thousands of lines of code were dropped onto a new platform, are being trimmed back.
Foster's webinars often include advice on the best practices of choosing replacement software. A company making a transition to a replacement app needs to understand what data will be needed, at what detail level, and in what timeframe. The best answers to those questions might come from outside of the IT group. In fact, Foster says they often do. A solid team of transition stakeholders always includes an important seat for a member from the business group.
Replacement of a 15- or 20-year MPE/iX app suite also might not be a favored choice in the IT group. That group includes the experts who know the programs best. Nothing seems like it will be a clean, quick fit for what's been running the company — not at first. Replacing with a non-MPE version of the app sometimes leaves key integrated surround code at the curb, too. Replacing surround code is a good project for outside expertise. Companies which consult on that task have field experience on success to share.
The good news: replacing a business suite is not as dangerous as replacing a human body joint. You get to shop and specify and test for replacement software, even while the worn-down hip of the business suite continues to bear the weight of the company's enterprise. Backing out of a replacement -- replacing the replacement -- is just as extensive in software as it is in medicine. It's like doing it all over again. But replacing after an attempt at rehosting? That's the least effective strategy of all.
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