Comment by zenethian

This site is obviously just an ad, but it does remind me that I do want to learn about how modern mainframe systems work. I understand the basics of COBOL but I understand nothing about how mainframes execute it in such a way that it can process the sheer volume of data that is crunched. The OS and execution environment sounds wild and completely foreign to me. Does anyone have any good resources on how to learn about the computational model of modern mainframes?