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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 ...
Schemes for data retention do not make provisions for adequate regulation of the data retention process and for independent judicial oversight. [citation needed] Data retention is an invasion of privacy and a disproportionate response to the threat of terrorism. [citation needed] It is easy for terrorists to avoid having their communications ...
the amount of time in which a given set of data will remain available for restore. Some backup products rely on daily copies of data and measure retention in terms of days. Others retain a number of copies of data changes regardless of the amount of time. Site-to-site backup. backup, over the internet, to an offsite location under the user's ...
This information is of great concern to businesses and government institutions simply because the longer data is left unused in storage, the more likely it might be retrieved by unauthorized individuals. Protecting such data involves methods such as access control, data encryption and data retention policies. [3]
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 ...
IT service continuity (ITSC) is a subset of BCP, [4] which relies on the metrics (frequently used as key risk indicators) of recovery point/time objectives.It encompasses IT disaster recovery planning and the wider IT resilience planning.
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.
This improved performance and reduced downtime. For example, one parameter that was made dynamic was the "tape retention in days" (the number of days that the backup is kept on the tape media without overwriting the existing contents in the production environment). On January 27, 2010, Sybase released ASE 15.5.