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Introduction

High-Availability solutions have evolved significantly over the past couple of years; many of today’s solutions combine mirroring or replication technologies with intelligent management software to enable geographic separation of cluster nodes and storage to provide disaster recovery within the High-Availability framework. But what will tomorrow’s High-Availability solutions look like?

Solution Architectures

There are probably three realistic architectures for high-availability which will exist once consolidation in the market place is complete;
Distributed Computing

Data is distributed among many machines. Changes are normally made on one machine and roll out over time to all machines. This model is in use today, in a simplistic form, by software vendors who use ‘mirrors’ for downloads like tucows or in distributed computing projects like the ‘search for extraterrestrial life’ (SETI).

This model allows fairly low powered machines to provide......

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Approximate Word Count: 2954
Approximate Pages: 12 (250 words per double-spaced page)

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