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Hundreds of years ago, primitive villagers would stand at the mouth of a volcano and throw an unfortunate individual into its gaping maw as a sacrifice. In return for this sacrifice, they felt they could be assured of anything from a safe pregnancy for the chief's wife, a bountiful harvest, a decisive victory in a war against another tribe (who presumably had no volcano to throw anyone into), and protection from bad things.
Too many companies treat a backup system like those villagers did the volcano. They sacrifice tapes to the backup system in the hope that it guarantees protection. However, when treated this way, backups offer about as much protection as the volcano that receives the sacrifice. Sacrifices to volcanoes were seen as a guarantee of protection. Similarly, backups are often seen as a guarantee of protection, even when they're not configured or treated properly. In particular, there is a misconception that is something which is called "backup software" is installed, then a backup system has been installed.
This book is all about learning how to build the backup system.
"Enterprise Systems Backup and Recovery: A Corporate Insurance Policy" moves beyond scripts and individual backup/recovery packages to explain not only how things work in a backup environment, but why they must be done. It is an indispensable tool not only for system architects, but also managers responsible for data protection within the environment.