"Why Do Mainframes Still Exist? What's Inside One? 40TB, 200+ Cores, AI, and more! - Dave explores the IBM z16 mainframe from design to assembly and testing. What's inside a modern IBM z16 mainframe that makes it relevant today?" - by Dave Plummer.
This is an amazing 23-minute video by the Microsoft programmer who developed the Windows NT Task Manager, among other things. He visits IBM and talks to engineers about the Telum chip architecture (Hot Chips 2023), used in the z16 mainframe. Special attention is paid to the cache.
Dave Plummer seems to be a bit careless with facts in his videos, and I wouldn't generally trust him as a source of information.
In an episode on hard drives, he talked about how drivers for hard drives still report a constant number of sectors per track, so they must have a physical layout that matches that. Hard drive manufacturers are open about the actual layout of their drives and that they virtualize the hard drive for the OS so that it behaves well.
A few Microsoft engineers also dispute a lot of the facts of his stories about the development of the start menu.
This is an amazing 23-minute video by the Microsoft programmer who developed the Windows NT Task Manager, among other things. He visits IBM and talks to engineers about the Telum chip architecture (Hot Chips 2023), used in the z16 mainframe. Special attention is paid to the cache.
https://youtu.be/ouAG4vXFORc