Wolfgang Graetsch

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The initial design for a distributed, fault-tolerant version of UNIX based on three-way atomic message transmission was presented in an earlier paper [3]. The implementation effort then moved from Auragen Systems<supscrpt>1</supscrpt> to Nixdorf Computer where it was completed. This paper describes the working system, now known as the TARGON/32. The(More)
13 arbitrary latency, its usefulness is limited by the number of visible events that the user can tolerate losing. [Gray86] Jim Gray. Why do computers stop and what can be done about it? In The concept of progressive retry was introduced in [Wang97]. The paper describes an implementation of progressive retry using checkpoints, message logs, and roll-back.(More)
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