submitted 8 months ago by acockworkorange@mander.xyz to c/selfhosted@lemmy.world

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I am building my 3-2-1 backup system and wanted to add an external HD to my TrueNAS machine. Since it only works with ZFS, I thought of setting up that drive as a compressed, dedup ZFS volume.

I have a truckload of NVMe left on the boot drive that I could repartition and turn some of the free space as a dedup vdev for the backup drive. I don't have any other physical bays to add a dedicated drive on the machine.

A) Is that a bad idea? What are the downsides of using the boot drive like that?

B) Which tool do you recommend for local backup? I'm looking for actual incremental backup, not just a sync tool.

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[-] acockworkorange@mander.xyz 1 points 8 months ago

In that case, what would be better in terms of memory / CPU usage: dedup and compression at the filesystem level or disabling it and doing it at the tool level?

[-] youRFate@feddit.de 2 points 8 months ago* (last edited 7 months ago)

You can’t dedup/compress restic repos at fs level due to the encryption.

Nice thing is you get those even with „dumb“ targets that can‘t do those for you.

this post was submitted on 06 Mar 2024

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