Data de-duplication is the process of identifying and eliminating duplicate copies of data within a system or across systems. It ensures that only a single, unique instance of data is retained, while redundant duplicates are either removed or referenced using pointers. This technique is widely used in storage optimization, data backup, and cloud infrastructure to reduce the amount of data that needs to be stored or transferred.
In simpler terms, de-duplication ensures you’re not storing the same data more than once, helping reduce storage bloat, improve efficiency, and cut costs.
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