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 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.
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 correct answer follows the 3-2-1 backup rule which states there should be 3 total copies of your data: 1 primary copy and 2 backups; 2 of the copies should be on different media or platforms; and at least 1 copy should be offsite. The correct answer includes 1 onsite backup, 1 offsite backup, and the original data set, with backups on different media, satisfying the rule's requirements. The incorrect answers do not fully comply with the 3-2-1 rule, either they don't provide two forms of media or they lack an offsite backup option.
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What is the 3-2-1 backup rule?
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Why is it important to have off-site backups?
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What are different types of storage media that can be used for backups?