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Table Of Contents  CertiGuide to A+ (Operating Systems)
 9  Chapter 0010:  File Attributes
      9  VI  All Backups are Not Created Equal

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Differential Backup

This choice means all files that have changed since the last full (complete) backup are saved in this backup method. Typically this is done once a week concluding with a full backup of the week(separate process) and then when the next week starts, the cycle (schedule) of backups of all files that have changed since this most recent last full backup begins again. The maximum number of backup sessions that occur in a week for this method is five, assuming that users work on the system five days a week. The archive bit is not touched (reset) during each backup.

Restoring Differential Backups

This method is slower, but not as slow as a full backup. This method is safer than an incremental backup but not as easy as a full backup to restore. When you need to restore you must use a full set (all of them!) of the full (complete) backup tapes, and the most current differential backup tape.


Previous Topic/Section
Full Backup
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Incremental Backup
Next Topic/Section

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