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This storage startup dedupes what to do what? How?


As I understand it for the netapp, only newly written blocks are looked at by the dedupe process. If a block has the same hash but different contents to an existing block, then I think it just marks it as having been processed, and thereafter no longer considers it a newly written block.

There's an initial pass over the whole volume when turning dedupe on, but the same principle applies - if the hashes match, and the contents match, it gets deduped, otherwise it's marked as having been processed and isn't looked at again until the contents change.

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