ZFS's dedupe is, I believe, 64k block dedupe; VDO's is 4k block dedupe. | Hacker News

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		sweettea on April 18, 2018 \| parent \| context \| favorite \| on: A look at VDO, the new Linux compression layer ZFS's dedupe is, I believe, 64k block dedupe; VDO's is 4k block dedupe.

vardump on April 18, 2018 [–]

ZFS dedup block size is whatever you set dataset record size to be. Powers of two from 0.5 kB to 256 kB are allowed at least.

So you can set ZFS to dedup 4 kB blocks. It just requires a boatload of RAM.

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