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Dave's Garage Dave's GarageWhy Do Mainframes Still Exist? What's Inside One? 40TB, 200+ Cores, AI, and more! thumbnail
23:33

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? Errata: Around 5:30, the CPUs are LGA(Land Grid Array), not PGA At about 7:07 should be 200 cores, not 256. At 20:03, they now achieve eight nines of reliability for both z16 and its Linux-only counterpart, the IBM LinuxONE 4. In a LinuxONE config, max RAM is 48TB.

Uploaded Oct 28, 2023

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