The days of waterfall software development on a mainframe are coming to an end. It’s no longer tolerable for end users to have to wait two years for a new application to be written and delivered to a spec that, by then, is two years out of date. The inflexibility of...
I was working recently with a mixed bag of people from a company, who were trying to predict the future and see how that company needed to change in order to get where they thought they ought to be going. One issue came up fairly quickly, and that was that 2020 isn’t...
Anyone who has been working on mainframes for any length of time knows that things are always changing. Many people can remember when DB2 was new (1983), the client-server period, and the need for Service-Oriented Architecture (SOA). And, I’m sure, can come up with a...
The great thing about green screens is that they are so easy and so quick to use. Basically, a screen appears, you enter some information, press tab, enter some more information, and press enter. It’s quick, it’s simple to use, what’s not to like? And that’s how so...
Mainframes are expensive – no-one disagrees with that. But what they can do is run industrial strength workloads for less than it would cost on other platforms with much less likelihood of any kind of system malfunction. Having said that, it makes sense to understand...
Mainframes come with plenty of security – why should they use a Security Information and Event Management (SIEM), when it doesn’t even run on the mainframe? This is pretty much the opening argument from most mainframers when talking about SIEMs, and, at first glance,...
While a large chunk of the world seems to think that mainframes are out of date and barely hanging on by the skin of their teeth in organizations that haven’t woken up to modern computing techniques, the rest of us know that mainframes, particularly the z14, are the...
Mainframe files/datasets are liable to change quite often. After all, people are using those files so they are likely to be modified/updated. So how could you tell whether there had been a legitimate change to the file or it had been hacked? How can you verify that...
To be honest, mainframes are pretty secure, aren’t they? We’ve had RACF and other External Security Managers (ESMs) for years. On top of that, the new z14 gives us pervasive encryption. And there are any number of logs recording what’s going on on Z, and we can run...
There was a time when mainframes were in a world of their own, separated from other computing platforms. A world where even the mainframe staff seldom mixed with the distributed people, and managers had no idea what the mainframe did or how it did it. People who...
