For those curious, data written to that port on the controller card was being corrupted. SATA CRC for communication was still good so i wasn't seeing SMART err

For those curious, data written to that port on the controller card was being corrupted. SATA CRC for communication was still good so i wasn't seeing SMART errors, but i was seeing zfs checksum errors. Was so glad that ZFS was catching it, first time i've seen an error like that.