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A type of backup that copies files that have been created or changed since the last recorded backup, thus it is only backing up files that have not yet been backed up.

Question

A type of backup that copies files that have been created or changed since the last recorded backup, thus it is only backing up files that have not yet been backed up.

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Solution

The type of backup you're referring to is known as an "Incremental Backup". Here's how it works:

  1. The first step in an incremental backup is to perform a full backup of all files. This serves as the base for future backups.

  2. After the full backup, the incremental backup will only copy files that have been created or changed since the last backup, whether it was a full backup or an incremental backup.

  3. Each time an incremental backup is performed, it will only backup the files that have changed since the most recent backup.

  4. This process continues, with each incremental backup adding to the previous set of backup data.

  5. In the event of data loss, recovery would require the last full backup and all subsequent incremental backups.

This method saves storage space and is faster than conducting full backups every time. However, data recovery can be time-consuming as it may require processing several sets of backup data.

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