In computing, backup storage is storage that is intended as a copy of the storage that is activity in use so that if the storage medium such as a hard disk fails and data is list on the medium it can be recovered from the copy.
Types of Backup
- Full backup
- A full backup is a backup of every file on a file system whether that file has changed or not.
- Incremental backup
- Incremental backups also back up only the changed data, but they only back up the data that has changed since the last backup-be it a full or incremental backup.
- So if you do an incremental backup on Tuesday you only back up the data that changed since the incremental backup on Monday.
- Differential backup
- A differential backup backs up only the files that changed since the last full backup.
- For example On Monday you back up only the files that changed since Sunday, on Tuesday you back up only the files that changed since Sunday and so on until next full backup.
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