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True continuous data protection is different from traditional backup in that it is not necessary to specify the point in time to recover from until ready to restore. [5] Traditional backups only restore data from the time the backup was made. True continuous data protection, in contrast to "snapshots", has no backup schedules. [5]
A snapshot indicates that a committed file(s) is stored in its entirety—usually compressed. A changeset , in this context, indicates that a committed file(s) is stored in the form of a difference between either the previous version or the next.
Box Backup? No No Bup: Yes Yes, chunk deduplication No Yes Yes ? Yes, through deduplication Yes No cpio: No No No Yes No No No ? Optional (separate download) Cobian Backup (v11)? No ? Cwrsync - Rsync for Windows Yes No No No No No No No No DirSync Pro: No No No DAR: Yes Yes; Incremental; chunking; Yes Yes ? ? ? ? dcfldd: No No No No No No No No ...
This is a comparison of online backup services. Online backup is a special kind of online storage service; however, various products that are designed for file storage may not have features or characteristics that others designed for backup have. Online Backup usually requires a backup client program.
Near-CDP backup applications use journaling and are typically based on periodic "snapshots", [16] read-only copies of the data frozen at a particular point in time. Near-CDP (except for Apple Time Machine) [17] intent-logs every change on the host system, [18] often by saving byte or block-level differences rather than file-level differences.
This is a list of notable backup software that performs data backups. Archivers, transfer protocols, and version control systems are often used for backups but only software focused on backup is listed here. See Comparison of backup software for features.
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