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The 3-2-1 Rule of Data Backup

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Introduction The 3-2-1 strategy is a widely recognized and recommended approach for data backup and protection. It provides a simple yet effective framework for ensuring data resilience and recoverability. The strategy emphasizes creating multiple copies of data, storing them in different locations, and employing different storage media. Let's break down the components of the 3-2-1 strategy: Three Copies of Data: The strategy requires having at least three copies of the data: The primary or production data stored on the organization's main systems. The first backup copy, typically stored on a separate device or storage system. The second backup copy, which serves as an additional layer of redundancy and is stored in a different location or medium. Two Different Storage Media: To guard against failures or data loss caused by a single type of storage media, it is recommended to use at least two different types of storage media for backup copies. For example: Primary data stored o...