>>106329431
Honestly that sounds more like you have bad cabling or a bad RAID/HBA card than failed drives.

I should have mentioned that in my original reply to you, but that's a VERY common situation with ZFS. It's not that ZFS is causing the errors, it's that it's catching them. Error pileups under high load (and resilvering is high load) are common systems that occur when a controller is overheating or you have sata cables that are getting flaky. Double check your cables, controllers, the ports their plugged into, etc. If you have no errors after a zpool clear and a secondary scrub, the drives are probably fine.

>Wtf I'm a ZFS believer now.
Yeah that's how it goes. I became a believer after the lighting strike. Rebooting my router system and having both drives be failed but the system still working broke my brain for a bit. I was scared to power it down to attach the donor drive for the initial resilver, so I just raw dogged it and fortunately had hot stop sata enabled in the bios.

I started migrating all my archival stuff over after that. Tried btrfs a few times and had baffling issues every time. ZFS Just Werks™ and outside of the dkms headaches during setup is so painless to use that it's legitimately made me jaded about the garbage backend infrastructure we use at work.