Backup refers to the copying of physical or virtual files or databases to a secondary site for preservation in the case of equipment failure or other catastrophes. The process of backing up data is pivotal to a successful disaster recovery plan.
What are backup and recovery?
What should I backup and how frequently?
A backup process is applied to critical databases or related line-of-business applications. The process is governed by predefined backup policies that specify how frequently the data is backed up and how many duplicate copies (known as replicas) are required, as well as by service-level agreements that stipulate how quickly data must be restored.
Backup storage for PCs and mobile devices
PC users can consider both local back-ups from a computer’s internal hard disk to an attached external hard drive or removable media such as a thumb drive. Another alternative for consumers is to back up data on smartphones and tablets to personal cloud storage, which is available from vendors such as Box, Carbonite, Dropbox, Google Drive, Microsoft OneDrive and others. These services are commonly used to provide a certain capacity for free, giving consumers the option to purchase additional storage as needed. Unlike enterprise cloud storage as a service, these consumer-based cloud offerings generally do not provide the level of data security businesses require.