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2. Incremental backup - Wikipedia

   en.wikipedia.org/wiki/Incremental_backup

   A full backup is level 0. A level n backup will back up everything that has changed since the most recent level n-1 backup. Suppose for instance that a level 0 backup was taken on a Sunday. A level 1 backup taken on Monday would include only changes made since Sunday. A level 2 backup taken on Tuesday would include only changes made since Monday.

3. Continuous data protection - Wikipedia

   en.wikipedia.org/wiki/Continuous_data_protection

   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 ] When data is written to disk, it is also asynchronously written to a second location, either another computer over the network [ 6 ] or an appliance. [ 7 ]

4. Backup rotation scheme - Wikipedia

   en.wikipedia.org/wiki/Backup_rotation_scheme

   Grandfather-father-son backup (GFS) is a common rotation scheme for backup media, [1] in which there are three or more backup cycles, such as daily, weekly and monthly. The daily backups are rotated on a 3-months basis using a FIFO system as above. The weekly backups are similarly rotated on a bi-yearly basis, and the monthly backup on a yearly ...

5. Storage efficiency - Wikipedia

   en.wikipedia.org/wiki/Storage_Efficiency

   Deduplication is most efficient at the shared storage layer, however, implementations in software and even databases exist. The most suitable candidates for deduplication are backup and platform virtualization, because both applications typically produce or use a lot of almost identical copies. However, some vendors are now offering in-place ...

6. List of backup software - Wikipedia

   en.wikipedia.org/wiki/List_of_backup_software

   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.

7. Backup - Wikipedia

   en.wikipedia.org/wiki/Backup

   The backup data needs to be stored, requiring a backup rotation scheme, [4] which is a system of backing up data to computer media that limits the number of backups of different dates retained separately, by appropriate re-use of the data storage media by overwriting of backups no longer needed. The scheme determines how and when each piece of ...