Magnetic tape
Magnetic tape data storage is a method of storing data on magnetic tape. It is used as a backup method of storage for digital storage and is one way of mitigating a possible digital dark age. For example, in 2011 hundreds of thousands of Google accounts were reset and the data in those accounts went missing. Google was able to restore the data to the email accounts from the data stored on magnetic tape. Magnetic data storage is also used by financial institutions, hospitals, movie studios, and manufacturing companies to backup content. Magnetic tape can hold hundreds of terabytes of data.