Chapter 10 Data Backup and Disaster Recovery
No matter how fault tolerant your server hardware is or if you have implemented the best security measures possible, there is no guarantee that data will never be lost. Sometimes the cause is totally beyond your control—a fire caused by a gas leak, for example, or even Mother Nature (remember the Los Angeles earthquake?). Also, to err is human; even the most experienced users and system administrators make mistakes. Deleting the wrong file or mistyping information into a file (such as /etc/passwd) can cause unwarranted headaches and additional work for yourself or coworkers who need to access the data, or, in the worst case, the deletion renders the whole system unusable. Also, a disgruntled user ...
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