Jesus same happened to me so frustrating! Everything working ok, then slowly increase of writing failures and power resets, and strange clicking, eventually all

Jesus same happened to me so frustrating! Everything working ok, then slowly increase of writing failures and power resets, and strange clicking, eventually all disks drop, scary every time it happened I swapped every server part before the PSU. Updated Linux, downgraded, tried kernel options... At some point I thought btrfs was the problem so I created an mdadm ext4 raid but got the same problem It was a btrfs raid 1, lots of fs errors, and files missing until restart, as some disks were down. But didn't lost any data (take that ZFS!) besides the one being transferred as the disks/array went down anyway