Data is changed, on
sender and receive have
key to place it back to
original
Backing up and archiving data
Back up
Placing data onto another
area in case the original is
lost
Archive
Moving or backing
up data not regular
use but may be
useful
Methods
Cloud
Tape
Son-Father-Grandfather
Annotations:
Grandfather-father-son[edit]
Grandfather-father-son backup refers to a common rotation scheme for backup media. In this scheme there are three or more backup cycles, such as daily, weekly and monthly. The daily backups are rotated on a daily basis using a FIFO system as above. The weekly backups are similarly rotated on a weekly basis, and the monthly backup on a monthly basis. In addition, quarterly, half-yearly, and/or annual backups could also be separately retained. Often some of these backups are removed from the site for safekeeping and disaster recovery purposes.