Is universal.
this post was submitted on 28 Jan 2026
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ZFS is magic if you have enough storage devices.
I was having all sorts of IO issues because a few shitty HDD cables, and the worst of the observed behavior was some hiccups and freezes sometimes. Hundreds of IO errors, and it was barely sometimes maybe having a pause...
After switching a bunch of cables around and re-scrubbing a few times, I've now had zero IO errors for months, and zero OS issues.
I'd hate to think how nasty things would've gotten and would still be if those hundreds and hundreds of IO errors were stacking up this whole time.
Been uasing ZFS with USB drives since 2019 or so. On Raspberry Pi 4, then on real computers. My laptop is on a single SSD. ZFS is the only reason I figured I have RAM issues two years ago. No errors would show up on a couple of passes of Memtest86+.
I genuinely do not remember how it acts with one or few devices, but I wouldn't be shocked to hear the magic extends past replacing raid arrangements or other multi-HDD setups.