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Experiences with zfs deduplication? (feddit.org)

submitted 1 year ago by needanke@feddit.org to c/selfhosted@lemmy.world

16 comments fedilink hide all child comments

I recently moved my files to a new zfs-pool and used that chance to properly configure my datasets.

This led me to discovering zfs-deduplication.

As most of my storage is used by my jellyfin library (~7-8Tb), which is mostly uncompressed bluray rips I thought I might be able to save some storage using deduplication in addition to compression.

Has anyone here used that for similar files before? What was your experience with it?

I am not too worried about performance. The dataset in question is rarely changed. Basically only when I add more media every couple of months. I also have overshot my cpu-target when originally configuring my server so there is a lot of headroom there. I have 32Gb of ram which is not really fully utilized either (but I also would not mind upgrading to 64 too much).

My main concern is that I am unsure it is useful. I suspect just because of the amount of data and similarity in type there would statistically be a lot of block-level duplication but I could not find any real world data or experiences on that.

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[–] needanke@feddit.org 1 points 1 year ago

Thank you, I didn't know that, but that was the type of answer I was looking for :D.

I only ripped the relevant media anyways, so no trailers to remove.