A company is looking to implement a robust backup strategy for their mission-critical data. Which of the following scenarios best aligns with the 3-2-1 backup rule?
The company stores all backups on different servers within the same onsite data center.
The company uses a single cloud storage service to make weekly backups of all their data.
The company has one backup on an external hard drive kept in a safe onsite and makes regular backups on the same network the original data is stored.
The company has one on-site backup on a network-attached storage device, one off-site backup stored in the cloud, and the original data on the company servers.