This is the media where data is stored for restoration purposes.

Media stored on tapes or diskettes and maintained in an offsite location to be used to restore an automated system in the event of a disaster.

Web hosts back up data on their servers. This is supposed to prevent the loss of data should something happen to the server. If you think you may need to restore old data in case of a disaster, it may make sense to choose a hosting company that offers regular backups.

secure copies of information that are protected from accidental change or deletion