The 3-2-1 backup rule is a widely recommended strategy for creating reliable and secure backups of your data. It provides a straightforward guideline for ensuring data protection and recovery in case of data loss or system failures. The rule suggests the following:
Three copies of your data: Create at least three copies of your important data.
Two different storage media: Store your data copies on at least two different types of storage media.
One off-site backup: Keep at least one copy of your data off-site, preferably in a different physical location.
By following 3-2-1backup rule, you establish multiple layers of redundancy, ensuring data availability and protection against various failure scenarios. It is a flexible guideline that can be adapted to suit different storage capacities, budgets, and specific requirements.
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