Apparatus for submitting fault-tolerant environmental and system structure in data processing system

Abstract

The functions of two virtual operating systems are merged into one physical system. Partner pairs of S / 88 processors run the S / 88 OS and handle the fault tolerant and single system image aspects of the system. One or more partner pairs of S / 370 processors are coupled to corresponding S / 88 processors directly and through the S / 88 bus. Each S / 370 processor is allocated from 1 to 16 megabytes of contiguous storage from the S / 88 main storage. Each S / 370 virtual operating system thinks its memory allocation starts at address 0, and it manages its memory through normal S / 370 dynamic memory allocation and paging techniques.

Description

[0001] This application is a divisional application of the application entitled "Method and Apparatus for Providing Additional System Features in a Data Processing System", filed on April 29, 1990, with application number 90102592.5. technical field [0002] The improvements of the present invention relate to means for adding a fault-tolerant environment and architecture to a data processing system which were lacking in the original system in the central processing unit and its operating system. Background technique [0003] Some of the more recent data processing systems of today offer many advanced features that were not available or supported by the host operating system in older host systems. These features include: providing a single system image over a distributed computing network; the ability to hot-plug processors and I / O controllers (install and fold cards at power-on); transient error detection; non-disruptive computer users Faulty components can be fault-isolated...

AI Technical Summary

Problems solved by technology

However, the new operating system may never establish a user base, and it will take many years of practical use to solve most problems

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