alt Hacker NewsYes, IBM mainframes employ or have analogous concepts to all of this which may be one of many reasons they haven't disappeared. A lot of it was built up over time whereas Tandem started from the HA specification so the concepts and marketing are clearer.
Stratus was another interesting HA vendor, particularly the earlier VOS systems as their modern systems are a bit more pedestrian. http://www.teamfoster.com/stratus-computer
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Yeah - Stratus rocked :-) The 'big battle' used to be between Non-Stops more 'software based' fault tolerance VS. Stratus's fully hardware level high availability. I used to love demo'ing our Stratus systems to clients and let them pull boards while the machine was running...Just don't pull 2 next to each other :-)
Also, I think Stratus was the first (only?) computer IBM re-badged at the time - IBM sold Stratus's as the Model 88, IIRC
I present to you "Commercial Fault Tolerance: A Tale of Two Systems" [2004][0] - a paper comparing the similarities and differences towards reliability/available/integrity between Tandem Nonstop and IBM Mainframe systems,
and the book "Reliable Computer Systems - Design and Evaluation"[1] which has general info on reliability, and specific looks at IBM Mainframe, Tandem, and Stratus, plus AT&T switches and spaceflight computers.
[0] https://pages.cs.wisc.edu/~remzi/Classes/838/Fall2001/Papers...
[1] https://archive.org/download/reliablecomputer00siew/reliable...