I like Joe Clabby. He tells it like it is. He has responded robustly a number of times now to Gartner advice to move off the mainframe to more "modern platforms". His latest such article is here.
However I think the truth lies between Gartner's doom and gloom predictions and Clabby's upbeat "you've never had it so good" optimism. Don't be under any illusion, decades of in depth knowledge of mainframe systems is going to leave your organisation over the next few years. But where Gartner gets it wrong is their insistence that the solution lies in migrating off the mainframe. They have used that phrase "more modern platfom" many times in recent years and this is starting to look like staggering ignorance of what IBM have been doing with System z for ten years.
There's no need to move off System z for modernity. IBM have brought modernity to System z. You want management GUIs? Check out the Tivoli automation range. You want a visual developer platform? Rational Developer for z (RDz). You want to run Java, C and C++? No problem. You want to consolidate your racks and racks of servers? Virtualise them? z/VM is the worlds most mature hypervisor, add SLES or RedHat Linux for up to 1500 servers in a 30kW box 10 feet square.
But I do think now is the time to modernise your mainframe. To streamline and automate the maintenance and management of the infrastructure. The product set has never been richer and I recommend you take a look. The greybeards will go soon, and while there are a new generation of System z afficionados leaving college as we speak, don't make them suffer needlessly. Enable them to be productive and creative. Simplify, streamline and automate with IBM Software.