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What are the three types of Backup?
Full, Incremental, Differential backups
- Backs up the entire set of data to the chosen place.
- Takes the most disk place, time and PC resources on backing up.
- The easiest and fastest to restore.
- Processes only files that appeared or changed since the previous backup. Index file is updated
- Pros: use the least time and space as only those files changed since the last backup are copied; lets you backup multiple versions of the same file.
- Cons: Long restore, which consist of the full backup and all subsequent Incremental backups; hard to located a particular file int the backup set
- Backup of those files which have change since the last full backup. Index file is not updated
- Pros: Takes up less time and space than a full backup; provides for more efficient restoration than incremental backups.
- Cons: Redundant information stored, because each backup stores much of the same information plus the latest information added or created since the last
- full backup. Faster restore than Incremental. Subsequent differential backups take longer and longer as more files are changed.