Applications needed to be fortified with this check-pointing to allow roll-back of the application on another processor if a hardware failure occurred. The TX software gained a level of fault-tolerance through check-pointing technology. The system was marketed as the "Eternity Series." The shoe box consisted of an OS processor, running a version of Unix called TX, and on which applications ran, and an I/O processor, running a Real Time Executive, developed by Tolerant, called RTE: both processors were 320xx processors. The company was founded by Eli Alon and Dale Shipley (both from Intel) as Tolerant Systems in 1983 to build fault-tolerant computer systems based on the idea of "shoe box" building blocks. ( July 2020) ( Learn how and when to remove this template message) Unsourced material may be challenged and removed. Please help improve this article by adding citations to reliable sources. This section needs additional citations for verification.
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