Chapter 3. Storage for Highly Available Systems

Introduction

Of all the resources that constitute any computing environment, data is considered the most valuable, difficult to maintain, and costly to re-create. This becomes especially evident in light of political and social changes resulting, for example, in more stringent regulatory requirements, such as SEC 17a-3 and 4 in the financial sector, Health Insurance Portability and Accountability Act (HIPAA) in the healthcare industry, or the Sarbanes-Oxley Act of 2002 across all publicly traded companies. While such changes primarily affect backup and archival strategy, another aspect of data management that becomes more prominent is its availability; and there are more potential causes for downtime ...

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