Backup software protects files, directories, documents, programmer data, and most other types of data on a computer. It creates an identical copy of computer files that can be restored in the case of file corruption or accidental loss. Backup, also known as online backup or remote backup, is the process of storing a copy of a physical or virtual file or database in a secondary, off-site location in case of a disaster or equipment failure. Enterprise-grade backup systems often include essential functions such as archiving and disaster recovery. Archival solutions enable a company to retain backup data that no longer needs to be synchronized with current versions but may be required in the future to comply with regulatory requirements.