In information technology, a backup, or data backup, is a copy of computer data taken and generally stored in a remote location so that it may be used to restore the original after a data loss event. Data loss can be the result of any number of internal or external factors, including computer viruses, hardware failure, file corruption caused by fire, natural calamities, and hacking attacks.
An organization should have a documented backup policy in place that clearly identifies the type of data and information for which making a backup is mandatory.
Let's now have a look at the different types of backup strategies.
Types of backup strategy
The backup policy should be approved by senior management. It should have clear and specific instructions regarding the organization's backup and retention procedure. The CISA Review Manual (CRM) covers the following types of backup strategy:
- Backup of the full database
- Backup of new data
- Differential backup
- Incremental...
