Server’s meaning could be a little more obvious. 

A backup server is a kind of server that empowers the backup of information, records, applications or potentially data sets on a represented considerable authority in house or far off server. It joins equipment and programming advances that give backup stockpiling and recovery administrations to associated PCs, servers or related gadgets. 

A backup server is by and large carried out in a venture IT climate where processing frameworks across an association are associated by an organization to at least one backup servers. 

A backup server comprises of standard equipment server with generous capacity limit, for the most part with repetitive capacity drives and a reason assembled backup server application. The backup plan for every PC might be introduced with a customer utility application or designed inside the host working framework (OS). At the planned time, the host interfaces with the backup server to start the information backup measure. The backup might be recovered or recuperated in case of information misfortune, information defilement or fiasco recuperation. 

With regards to a facilitating or cloud specialist organization, a backup server is distantly associated through the Internet on a Web interface or through seller application programming interfaces (API).