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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 ...
3-2-1 Rule (or 3-2-1 Backup Strategy) The idea that a minimal backup solution should include three copies of the data, including two local copies and one remote copy. [1]
Backup. In information technology, a backup, or data backup is a copy of computer data taken and stored elsewhere so that it may be used to restore the original after a data loss event. The verb form, referring to the process of doing so, is "back up", whereas the noun and adjective form is "backup". [1] Backups can be used to recover data ...
IT disaster recovery (also, simply disaster recovery (DR)) is the process of maintaining or reestablishing vital infrastructure and systems following a natural or human-induced disaster, such as a storm or battle. DR employs policies, tools, and procedures with a focus on IT systems supporting critical business functions. [1]
Incremental backup. An incremental backup is one in which successive copies of the data contain only the portion that has changed since the preceding backup copy was made. [1][2][3][4] When a full recovery is needed, the restoration process would need the last full backup plus all the incremental backups until the point of restoration. [5]
An effective backup strategy must also consider the cost of maintaining the ability to recover lost data for long periods of time. A highly effective backup system would have duplicate copies of every file and program that were immediately accessible whenever a Data Loss Event was noticed. However, in most situations, there is an inverse ...
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