When the drive is idle, a process called garbage collection goes through and makes sure the information in the old block is erased and that the block is free to be written to again. The data on the old block is copied to a different block, the block is erased, and the data is rewritten with the changes to a new block.Įach time you ask your computer to retrieve or update data, the SSD controller looks at the address of the data requested and reads the charge status. All the data in a block must be refreshed when any portion of it is updated.
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