Backup

Backup means creating a backup copy of what is in the computer system Data files, directories or programs on an alternative storage medium. The data is stored there for a certain period of time in the event of system failures, data damage or data loss to restore the original data. The procedure, the storage media and the frequency with which the data is backed up depends on how up-to-date it is and how often it is used. Backups usually take place at the file level.

Depending on the backup procedure, the entire files can be backed up, which is advantageous in terms of speed when restoring the data (full backup) If only the data that has been modified since the last backup is saved, this is called a Incremental Backup. A backup of the files at a certain point in time is called a snapshot Backup systems are usually server-based, but there are also serverless backups.