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IT Systems Management, Second Edition by Rich Schiesser

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Chapter 7. Availability

Introduction

We start our journey through the various disciplines of systems management with one of the most commonly known characteristics of any computer system—availability. As with any term that is widely used but often misunderstood, a good place to begin is with a clear definition of the word. Discussions about availability often include several words or phrases closely associated with this process, and it is important to understand the differences in meanings of these expressions. We differentiate the term availability from other terms like uptime, downtime, slow response, and high availability. This leads to showing the benefits of a single process owner and prioritizing some of the desirable ...

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