An Incremental Backup, as it refers to Tape Backup systems, only backs up files that were created or changed since the last full or incremental backup. It does marks files as having been backed up. If using a combination of full and incremental backups, restoring requires starting with the last full backup and then working through all the incremental backup tapes. The incremental method requires the least amount of data storage space and is the least time-consuming. However, files can be difficult to find because they are spread across several tapes. Therefore, recovery does take longer than if files were on a single tape.
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