Mainframe Rehosting via an Optimal Solution

To reduce costs and improve business agility, many enterprises are migrating from the mainframe to the open system using mainframe rehosting solutions. But not all mainframe rehosting solutions are made equal. For successful mainframe rehosting, it is of vital importance to choose an optimal rehosting solution.

ONE- Huge Reduction in TCO

Rehosting via an optimal solution allows enterprises to reduce total cost of ownership as much as by 66%, and achieve positive ROI in as little as 12 months. This is made possible via built-in modules, which reduce migration time, thereby reducing labor costs. Another reason is that customers are now no longer locked-in to mainframe applications, which means much lower license costs.

TWO- Preservation of Business Logic.

With an optimal solution, you can simply lift and shift business logic from the mainframe to the open system. This is made possible with built-in tools that allow mainframe resources such as JCL and COBOL to be migrated to the open system without any modification. The result is an open system that runs exactly as the way it ran before, eliminating all risks associated with migrating away from the mainframe.

THREE- Automatic Storage Migration to RDB

An optimal solution provides built-in tools that automatically converts mainframe datasets into a table structure, allowing direct migration to RDBMS. This allows customers to upgrade their flat file database to a relational database of their choosing such as Oracle, SQL Server, and Tibero.

FOUR- Full Package

One of the major problems with many rehosting solutions is that they do not provide built-in compilers and utilities. An optimal solution comes with a bevy of compilers and utilities, saving you money.

The Need for Mainframe Modernization

The previous post discussed the topic, “what is mainframe modernization?”. This post will describe the concept of mainframe modernization in detail.

The mainframe is basically a giant monolith, left in the dust by newer technology. While new kids on the block such as Google and Facebook are playing around with new technologies, older, more established companies are stuck with the technology of the 1970s.

As a result, they are falling behind new firms in competitiveness, hindering their business agility and growth. However, you can’t just throw away the whole thing. Decades of data and applications exist in mainframes. Data and applications that are mission-critical to a firm.

While newer firms do not have such problem because they never had to use mainframes to even begin with. But older companies have a big task at hand, they need to adopt new technologies, but they simply do not have the option to overhaul their entire system, or at least not without disruption to mission-critical services.

If you look at the stats, in the United States alone, federal agencies spend 70% of IT budget in legacy system maintenance, and over $50bn is spent on maintaining legacy systems, which could have been used for adopting new IT capabilities. As well, over 70% of world’s data still reside in mainframes, containing over 200 billions of lines of COBOL code. So what does this mean? Mainframe and COBOL still dominate the world, even now, at the dawn of the Fourth Industrial Revolution.

This is the grim reality of older firms, losing more and more competitiveness every day to newer firms; unable to replace decades worth of data and applications worth millions perhaps even billions of dollars, hindering their growths, and their ability to invest and use new technologies. The longer they wait to modernize, the further they are gonna be left behind.

However, despite all the reasons to modernize, most enterprises are hesitant in modernizing their mission-critical systems. So why is this the case? This is because of the following reasons:

-Too time intensive (may take years to complete)

-Too cost intensive (costs can easily outweigh benefits)

-Cause disruption in service (cannot afford disruption to mission-critical systems)

-Too risky (you spend all that time and money, and it may not even succeed!)

You can see why companies are willing to just maintain the status quo. However, having a “don’t fix what’s not broken” approach will not work. Why? Because modernization gives organizations the following key advantages:

1.Technological efficiency

2.Cost efficiency

Companies have to improve these two critical areas, or simply fall behind in the competition.

The next post, “Benefits of Mainframe Modernization” describes each of these advantages in detail.

Mainframe Modernization in a Nutshell

What is mainframe modernization? This is the question that will be answered in this post.

Ever since the mainframe was born in 1964, large-scale enterprises have invested heavily in the mainframe, nicknamed “The Big Iron”.

They were especially drawn to its ability to rapidly process large-batch jobs unmatched by commodity hardware.

However, with the advancement in technology, commodity hardware can now provide processing power similar to that of the mainframe. As well, unlike the monolithic mainframe, commodity hardware provides an open-system, which enterprises can leverage to gain higher agility, higher cost efficiency, the ability to run on the Cloud, and the ability to incorporate new technologies.

This has left the mainframe largely ignored by new enterprises. However, enterprises that have previously invested heavily are are still heavily dependent on the mainframe as it is extremely difficult to move mission-critical applications and decades worth of data to the open system.

This has resulted in a concept called mainframe modernization, to allow mainframe-dependent enterprises to catch up to their more agile counterparts using commodity hardware.