FreeNAS 8.3.0 Beta 1 – ZFS v28 includes deduplication

FreeNAS_logo   In FreeNAS 8.3 deduplication can be enabled at the dataset level and there is no way to undedup data once it is deduplicated. The more data you write to a deduplicated dataset the more RAM it requires – importing an unclean pool can require between 3-5 GB of RAM per TB of deduped data and if the system doesn’t have the needed RAM it will panic. Think carefully before enabling dedup!



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