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Apparent issues with ZFS on RPi 5 (lemmy.world)

submitted 1 week ago* (last edited 1 week ago) by ramenshaman@lemmy.world to c/selfhosted@lemmy.world

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I tried to find a more applicable community to post this to but didn't find anything.

I recently set up a NAS/server on a Raspberry Pi 5 running Raspberry Pi OS (see my last post) and since then I've got everything installed into a 3D printed enclosure and I've got RAID set up (ZFS RAIDz1). Prior to setting up RAID, I could transfer files to/from the NAS at around 200MB/s, but now that RAID is seemingly working things are transferring at around 28-30 MB/s. I did a couple searches and found someone suggesting to disable sync ($ sudo zfs set sync=disabled zfspool). I tried that and it doesn't seem to have had any effect. Any suggestions are welcome but keep in mind that I barely know what I'm doing.

Edit: When I look at the SATA hat, the LEDs indicate that the drives are being written to for less than half a second and then there's a break of about 4 seconds where there's no writing going on.

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[–] monkeyman512@lemmy.world 2 points 6 days ago

Other people have already talked about why you are having performance issues with the Pi. As for a better NAS solution you will probably be better off with a used desktop PC from the last 10 years. If the computer doesn't have enough SATA ports you can get a sata addon card or HBA (host buss adapter) addon card flashed in IT mode. You should be able to find a lot of options on eBay. Maybe people can chime in with specific models to look at.