my box has been on for about 6 months without problems, the last 120 days continuously without reboots, with version 6.8.0.
A couple of weeks ago I added two new SSDs, without having any problem after.
Yesterday I decided to upgrade to 6.9.2 to be able to create a new pool from those new SSDs.
I finished the update at 9:30 am.
At 18:47 read errors appeared on 2 disks in the array.
I stopped and started the array and everything came back ok.
At 4:40 this morning the same errors came back again.
What can it be? Cables haven't moved in weeks, I just ran the firmware upda