Also thanks to virtualization being originally invented in mainframes, and the OS design done by IBM (and Unisys as well), they get to run the old workloads on modern hardware, and also support various UNIX flavours.

You can even run most cool Python, Go, Java, Rust, PHP among others, on systems like z/OS.

We have a couple mainframes at work, had an incident last year when someone forgot to apply a new license to one. p1, no payments happening.

I was kinda stunned; there’s a level of balls involved in selling an x millions machine and having it fail closed that I’m sort of impressed by but also utterly appalled they’d treat their big customers like that..

I mean surely to fuck it could have been an automated reminder email to the mothership and not just: sorry folks no banking for you today.