A backup procedure such as the son$-$father$-$grandfather approach allows an entity to:

Restore a master file that has been damaged or destroyed by applying backup transaction files to a previous version of the master file.

Immediately switch its database to a new facility in the event of a disaster.

Protect the entity$$s network from external attacks such as viruses, worms, and denial$-$of$-$service incidents

Resume operations in the event that computing facilities become inoperable due to a natural disaster