Which type of data backup is primarily known for its long-term storage, cost-effectiveness for large volumes of data, and is often used for offsite storage?
The correct answer is 'Tape' because this backup type has been traditionally used for archiving data due to its durability and lower cost when dealing with large quantities of data. It is commonly used in offsite storage strategies for disaster recovery purposes. 'Disk' is incorrect as this type of storage is typically used for faster access and is more expensive for large data volumes. 'Snapshot' is used for creating a point-in-time copy of data, but it is not typically used for long-term offsite storage. 'Cloud' refers to storing data on remote servers accessible over the internet, which indeed allows for long-term storage but is not the traditional physical backup method implied by the question.