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Failures Paper

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Failures Paper
Charles Persinger
University of Phoenix
POS/355 Jeff Rugg
April 28, 2014

Simply put, distributed computing is allowing computers to work together in groups to solve a single problem too large for any one of them to perform on its own. Distributed computing is not a simple matter of just sticking the computers together. For a distributed computation to work effectively, those systems must cooperate, and must do so without lots of manual intervention by people. This is usually done by splitting problems into smaller pieces, each of which can be tackled more simply than the whole problem. The results of doing each piece are then reassembled into the full solution. As handy as a distributed system can be there are a there are four main issues you could face: Operating system failures, Hardware Failures, Omission Failures and Byzantine Failures.
Crash failures are caused across the server of a typical distributed system and if these failures are occurred operations of the server are halt for some time. Operating system failures are the best examples for this case and the corresponding fault tolerant systems are developed with respect to these affects. Hardware failures used to be more common, but with all of the recent innovations in hardware design and manufacturing they tend to be fewer and far between with most of these physical failures tending to be network or drive related. With more hardware the probability goes up that there will be a failure somewhere. Add more software and the complex interactions between different programs creates greater chance for more bugs, including the unusual ones. As a result, any distributed design will carefully consider failure and diagnostic scenarios.
With Omission failure a component that does not respond to an input from another component, and thereby fails by not producing the

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