A backup server is a type of server responsible for backing up data, files, folders, and databases on a specialized in-house or remote server. It is generally implemented in an enterprise IT environment where computing systems across an organization are connected by a network to one or more backup servers.
It consists of standard hardware server with substantial storage capacity, mostly with redundant storage drives and a purpose built backup server application. The backup schedule for each computer may be installed with a client utility application or configured within the host OS. At the scheduled time, the host connects with the backup server to initiate the data backup process. The backup may be retrieved or recovered in the event of data loss, data corruption or disaster recovery.
An alternative to server backup are online backup and recovery services that save your network's data to a remote location in the cloud (cloud backup).