| 摘要 |
Upon the arrival at a memory device of one or more data chunks associated with respective logical addresses, each data chunk is assigned a signature, stored in a first location, and copied to a second location. The copy is assigned a signature that matches the signature of its parent data chunk. Before erasing a memory block that includes one or more data chunks, it first is verified that those data chunks have been copied, i.e., that copies of all the data chunks in the block, with matching signatures, exist in the memory device.
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