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The idea behind cluster computing is simple. A group of standalone computers is linked together using cables and special cluster software. To the users, everything looks and feels the same.
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The computer group appears as a single unit. Internally, however, there are some major differences. The individual computers complement each other, for example during failover or for load balancing. If one computer fails, the others take over its tasks. One computer alone cannot do this. So maximum availability is guaranteed 24 hours a day. And the administration is easy too. The clustered computer group appears as a single control point that can be managed remotely with ease. Maintenance work is possible while the systems are running. All in all, cluster computing is a highly efficient means of boosting security against downtimes, increasing application performance and maximising scalability. User benefits, security and reliability all increase while the costs go down.
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High Availability
